SEW 39 min KAF37 AWA100/1 我們來形象的理解一下上面變換的意義。如果F(12;34)表示一對(duì)電子-空穴3-4散射成另外一對(duì)電子-空穴1-2，這是一個(gè)水平的散射過程，那么將C2和C4兩個(gè)湮滅算符后，就變成了從3-2散射成1-4，是一個(gè)垂直的散射過程。交換兩個(gè)算符的過程，可以形象的理解為將這兩個(gè)算符的頂角對(duì)應(yīng)的外腳相互交換，這兩個(gè)外線必然要cross，所以我們把這個(gè)對(duì)稱性稱為crossingsymmetry。對(duì)應(yīng)于上述交換C2和C4兩個(gè)湮滅算符，crossing-symmetry將particle-holehorizontalchannel中的頂角函數(shù)變到了particle-holeverticalchannel中。同樣的道理，如果我們交換一個(gè)產(chǎn)生一個(gè)湮滅算符，比如C2和C3，我們也可以把particle-holechannel與particle-particlechannel聯(lián)系起來。總而言之，費(fèi)米子的交換反對(duì)稱性，使得三個(gè)channel中的Bethe-Salpeter方程并不獨(dú)立，他們之間應(yīng)當(dāng)可以相互轉(zhuǎn)換。另外，因?yàn)橥耆斀呛瘮?shù)F是遵從crossingsymmetry的，當(dāng)我們考慮任何一個(gè)Bethe-Salpeter方程，左邊的F在crossing操作下變成了自己（符號(hào)相應(yīng)的改變），等式右邊自然也應(yīng)當(dāng)變成自身。我們以particle-holehorizontalchannel為例，等式右側(cè)的項(xiàng)，在crossc_2和c_4后會(huì)從horizontal的連接方式變成了vertical的，而不是變成自身。因此，我們只能要求等式右邊的項(xiàng)Γ中應(yīng)當(dāng)有一項(xiàng)，它能夠在crossc_2和c_4后變成等式的項(xiàng)。換句話說，Γ中應(yīng)該包含verticalchannel中等式右邊的項(xiàng)，它在cross2和4后，會(huì)給出horizontalchannel等式右邊的項(xiàng)。同樣的道理，Γ中也應(yīng)當(dāng)含有particle-particlechannel中的連接方式，這樣才能保證無論怎樣交換兩個(gè)外腳，都可以保證F能夠變回自身，滿足crossingsymmetry。因此，我們熟悉的Bethe-Salpeter方程中的Γ應(yīng)該表示成如下的樣子：
這里將在每一個(gè)channel中不可約（不可約的意思是說，不能夠通過剪斷任意兩條內(nèi)部的格林函數(shù)線使其分成兩個(gè)獨(dú)立的部分）的Γ進(jìn)一步分解，其中Λ被稱為完全不可約頂角函數(shù)，它在三個(gè)channel中都是一樣的，并且在任何一個(gè)channel中都是兩粒子不可約的。作為對(duì)比，這里我們強(qiáng)調(diào)一下，Γ_ph僅在particle-holehorizontalchannel里是不可約的，我們不能再進(jìn)一步通過剪斷兩條單粒子格林函數(shù)線把它分解成horizontal方向上的兩個(gè)獨(dú)立部分了。但是Γ_ph在其他channel就變成可約的了。比如在particle-holeverticalchannel里，我們要剪斷垂直的兩個(gè)格林函數(shù)線。按照上圖，這顯然是可以把Γ_ph等式右側(cè)的張圖分成兩部分。所以我們說，Γ_ph在verticalchannel里可約的。同樣的道理，Γ_ph在paritlce-particlechannel里也是可約的。上圖對(duì)于Γ的分解，構(gòu)成了一組新的方程，我們稱之為parquet方程。這樣的分解完全保證了兩粒子完全頂角函數(shù)F具有crossingsymmetry。這時(shí)候，我們就可以安全的對(duì)Λ做近似，而不會(huì)破壞crossingsymmetry了。這顯然比在Bethe-Salpeter方程中對(duì)三個(gè)Γ做近似要更有優(yōu)越性。對(duì)于如何求解完整的parquet方程，可以參考筆者的程序和方法[1,2]。我們可以把Λ用它的階近似U來替代，叫做parquetapproximation。2007年，K.Held組用動(dòng)力學(xué)平均場(chǎng)方法嚴(yán)格計(jì)算了局域完全不可約頂角函數(shù)Λ，并用動(dòng)力學(xué)平均場(chǎng)lattice格林函數(shù)來替換parquet方程中的格林函數(shù)線。這樣做，完全不可約頂角函數(shù)雖然是局域的，但是通過parquet方程及Bethe-Salpeter方程，我們可以計(jì)算得到非局域的完全頂角函數(shù)F，從而計(jì)算得到非局域的自能。因此，這也構(gòu)成了一種動(dòng)力學(xué)平均場(chǎng)的非局域擴(kuò)展方法，稱之為dynamicalvertexapproximation[3].這里我們不再進(jìn)一步闡述這個(gè)方法了，剩下的大部分都是數(shù)值計(jì)算的細(xì)節(jié)了。通過和DualFermion及non-localexpansion方法對(duì)比，我們可以看到，雖然這些方法的出發(fā)點(diǎn)不同，但是自能的非局域修正均來自于局域兩粒子頂角函數(shù)的非局域連接。任何單粒子層次上的非局域性，都無法進(jìn)入到自能中，都僅僅只是在由impurity格林函數(shù)變換成lattice格林函數(shù)的過程中起作用。自能，作為單粒子中的相互作用部分，其本質(zhì)是來自于兩體相互作用，因此任何非局域的修正來至于兩粒子頂角函數(shù)也是情理之中。基于這樣的思想，也可以通過局域兩粒子頂角函數(shù)的不同連接方式，構(gòu)造出全新的量子多體方法，對(duì)動(dòng)力學(xué)平均場(chǎng)的局域自能進(jìn)行非局域修正。這是一個(gè)嶄新的領(lǐng)域，雖然略有門檻，但是有很多可以嘗試和擴(kuò)展的東西。目前的非局域擴(kuò)展多集中在單軌道體系中，Hubbard相互作用，如何將非局域擴(kuò)展方法更為核心的部分抽出來，簡(jiǎn)化計(jì)算，使得它更好的適用于真實(shí)材料體系的研究，將會(huì)是下一個(gè)研究中心。
SEW 39 min KAF37 AWA100/1 歡迎聯(lián)系小歐,手機(jī)18030229050，我們是做AB,GE,西門子，施耐德，巴赫曼，ABB機(jī)器人，霍尼韋爾，力士樂，安川，庫卡，等品牌
NATIONAL INSTRUMENTS NI PCI-DIO-96 CARD 182920D-01
New National Instruments NI DIO-96 PCI CARD
National Instruments GPIB-120A Bus Expander Isolator
National Instruments NI PCI-6013 16-bit analog DAQ
National Instruments FP-TB-1 Screw Base Terminal
NATIONAL INSTRUMENTS NI AT-GPIB 181830E-01
National Instruments P/N: 500445P-00 Driver CD Set
National Instruments AT-MIO-16E-1 1830188B-01 DAQ Card
National Instruments EISA-A2000 DAQ Card 180875-01
National Instruments: 181065-01 GPIB-PCII/IIA Card
National Instruments NI 776207-01 180625-01 Board NEW
ALLEN BRADLEY 1791-16BC I/O BLOCK MODULE 24VDC 32 POINT
ALLEN BRADLEY 1791-24A8 I/O BLOCK 120VAC 32 POINT MODULE
ALLEN BRADLEY 1791-24AR I/O BLOCK 120VAC 32 POINT MODULE
ALLEN BRADLEY 1791-24B8 BLOCK I/O, 24V DC, 32 POINT MODULE
ALLEN BRADLEY 1791-24BR BLOCK I/O, 24V DC, 32 POINT MODULE
ALLEN BRADLEY 1791-32AO /O BLOCK 120VAC 32 POINT INPUT MODULE
ALLEN BRADLEY 1791-32BO I/O BLOCK 24V DC 32 POINT MODULE
ALLEN BRADLEY 1791-8AC I/O BLOCK 120VAC 16 POINT MODULE
ALLEN BRADLEY 1791-8AR I/O BLOCK 120VAC 16 POINT MODULE
ALLEN BRADLEY 1791-8BC I/O BLOCK 24VDC 16 POINT MODULE
ALLEN BRADLEY 1791-8BR I/O BLOCK 24VDC 16 POINT MODULE
ALLEN BRADLEY 1791-AIC ISOLATED LINK COUPLER
ALLEN BRADLEY 1791-IOBA I/O BLOCK 24VDC 16 POINT
ALLEN BRADLEY 1791-IOBB I/O BLOCK 24VDC 16 POINT
ALLEN BRADLEY 1791-IOBW I/O BLOCK 24VDC 64 PT MODULE
ALLEN BRADLEY 1791-IOBX I/O BLOCK 24VDC 128POINT MODULE
ALLEN BRADLEY 1791-IOVW I/O BLOCK 24VDC 64 POINT MODULE
ALLEN BRADLEY 1791-IOVX I/O BLOCK 24VDC 128POINT MODULE
ALLEN BRADLEY 1791-N4C2 I/O BLOCK 120VAC 6 POINT ANALOG MODULE
ALLEN BRADLEY 1791-N4V2 I/O BLOCK 120VAC 6 POINT ANALOG MODULE
ALLEN BRADLEY 1791-NDC I/O BLOCK 120VAC 6 POINT ANALOG MODULE
ALLEN BRADLEY 1791-NDV I/O BLOCK 120VAC 6 POINT ANALOG MODULE
ALLEN BRADLEY 1791-TB2 TERMINAL, 30 POSITION, 10 PCS KIT
ALLEN BRADLEY 1791D-OB16P 24VDC I/O BLOCK 16 OUT SOURCE REMOVABLE TAB
ALLEN BRADLEY 1791D-OB16PX BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB
ALLEN BRADLEY 1791D-OV16P 24VDC I/O BLOCK EXPANSION 16 IN SINK RTB
ALLEN BRADLEY 1791D-OV16PX BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB
ALLEN BRADLEY 1791D-16BO BLOCK I/O 24VDC 16 IN SINK REMOVABLE TB
ALLEN BRADLEY 1791D-16BOX 24VDC I/O BLOCK EXPANSION 16 IN SINK RTB
ALLEN BRADLEY 1791D-16VO BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB
ALLEN BRADLEY 1791D-16VOX BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB
ALLEN BRADLEY 1791D-8B8P 24VDC I/O BLOCK 8 IN SINK 8 OUT SOURCE RTB
1794
MFR. PART NUMBER DESCRIPTION
ALLEN BRADLEY 1794-ACN15 CTRLNET ADAPTER
ALLEN BRADLEY 1794-ACNR15 CTRLNET ADAPTER
ALLEN BRADLEY 1794-AND DEVICENET ADAPTER
ALLEN BRADLEY 1794-ASB I/O ADAPTER
ALLEN BRADLEY 1794-ASB2 I/O ADAPTER
ALLEN BRADLEY 1794-IA16 16 INPUT MODULE
ALLEN BRADLEY 1794-IA8 8 INPUT MODULE
ALLEN BRADLEY 1794-IA8I 8 INPUT MODULE
ALLEN BRADLEY 1794-IB10X0B6 I/O MODULE
ALLEN BRADLEY 1794-IB16 16 INPUT MODULE
ALLEN BRADLEY 1794-IB8 8 INPUT MODULE
ALLEN BRADLEY 1794-IC16 16 INPUT MODULE
National Instruments NI AT-MIO-16E-10 FREE WW SHIPPING
National Instruments PCI-6503 & 50 Pin Breakout + Cable
VHDCI Breakout for National Instruments NI PCI-6224
Expedited shipping available
VHDCI Brkout for National Instruments PCI-6220 M Series
Expedited shipping available
NATIONAL INSTRUMENTS NI SCXI-1161 8-CHANNEL POWER RELAY
NATIONAL INSTRUMENTS GPIB-PCII / IIA ASSY 181065-01
NATIONAL INSTRUMENTS GPIB-232CV-A CONVERTER
National Instruments NI PCI-DIO-96 Digital I/O DIO 96
National Instruments BUS EXTENDERS GRIB-SCSI-A GPIB-110
National Instruments NI PCI-6527 Isolated 48-Ch I/O
National Instruments NB-GPIB Mac NuBus Card 180510-01
National Instruments 701525-01 NB-GPIB Mac NuBus ASSY18
One-day shipping available
National Instruments GPIB11-2 Operating SERVICE Manual
National Instruments NI-VXT Software Refence Manual C
NATIONAL INSTRUMENTS DAQ BLOCKS CB-50LP CABLE CA-1000
NEW National Instruments VXI-MXI-2 Extender Card (O54)
NATIONAL INSTRUMENTS SC-2050
NATIONAL INSTRUMENTS AT-DIO-32F USER MANUAL
NI National Instruments NI-PCI-6503 24 chan Digital I/O
Expedited shipping available
National Instruments NI PCI-6503 DAQ Board
National Instruments PCI 232/485 8ch board with cable
National Instruments PCI-232/485 8CH Interface Card
National Instruments type X2 763507-03 cable NEW
National Instruments SCXI-1303 Connector
NEW National Instruments NI 181065 GPIB-PCIIA ISA Card
Sealed National Instruments HIQ for Macintosh/Power Mac
NATIONAL INSTRUMENTS NI BNC-2095 32 BNC MODULE
National Instruments Type X2 GPIB Cable 763061-02 NEW
National Instruments 181065H-02 GPIB PCII Interface ISA
One-day shipping available
TSXDEZ32D2
TSXDEY16A4
TSXDEY16A5
TSXDEY16D2
TSXDEY16D3
TSXDEY64D2K
TSXDMZ28AR
TSXDMZ28DR
TSXDMZ28DT
Premium Processor 處理器
TSXP57103M Premium Premium 處理器，P57103M
TSXP57104M Premium Unity Premium 571x4 CPU
TSXP57153M Premium Premium 處理器，P57153M, FIPIO 總線
TSXP57154M Premium Unity Premium 571x4 CPU，帶FIPIO口
TSXP571634M Premium Unity Premium 571x4 CPU，帶Ethernet口
TSXP57203M Premium Premium 處理器，P57203M
TSXP57204M Premium Unity Premium 572x4 CPU
TSXP57253M Premium Premium 處理器，P57253M，F(xiàn)IPIO 總線
TSXP57254M Premium Unity Premium 572x4 CPU，帶FIPIO口
TSXP572623M Premium Premium 控制器，嵌裝 Ethernet
TSXP572634M Premium Unity Premium 處理器，160Kb，嵌裝 Ethernet
TSXP572823M Premium Premium 控制器，嵌裝 Ethernet & FIPIO
TSXP57303AM Premium Premium 573X3 PL7 PROCESSOR
TSXP57304M Premium Unity Premium 處理器，192Kb
National Instruments 181065-01 GPIB-PCII/IIA ISA GPIB
One-day shipping available
National Instruments 181065-02 GPIB-PCII ISA Card
One-day shipping available
National Instruments, 181045-01, VXI-MXI module
National Instruments VXI/VME-AT2010 Manual
NATIONAL INSTRUMENTS NI AT-MIO/AI-16XE-10 MULTIFUNCTION
National Instruments: Matrix Terminal Block TB-2632 NIB
National Instruments 320094-01 Digital I/O for the Maci
One-day shipping available
National Instruments NB-M10-16 I/O Board
One-day shipping available
National Instruments GPIB-SCSI-A Controller 181340D-01
National Instruments AT-GPIB/TNT IEEE-488.2 ISA Card
Racal GPIB-VXI/C VXIbus C-size Mod National Instruments
National Instruments 1m cable - 187805-01
National Instruments GPIB-SCSI-A Controller 181340D-31
NATIONAL INSTRUMENTS CFP-RTD-124 INPUT 8-CHANNEL 4-WIRE
NATIONAL INSTRUMENTS CFP-DI-301 DIGITAL DISCRETE INPUT
National Instruments CB-68T CA-1000 Enclosure
One-day shipping available
National Instruments PC-DIO-24 I/O Board, 180710C-01
National Instruments AT-GPIB/TNT Plug & Play IEEE 488.2
National Instruments NB-DIO-24 Digital I/O 180525-01
National Instruments PCI 232/485 2-CH DAQ Card 184686D
NATIONAL INSTRUMENTS GPIB-SCSI CONTROLLER IEEE-488
National Instruments NI PCI-DIO CARD 185183C-01 PCI
NATIONAL INSTRUMENTS NI GPIB IEEE 488 Adapter 4.1m
National Instrument Terminal Base FP-TB-1 FPTB1
Expedited shipping available
National Instruments 777853-02 PCI-4851/2, 2-Port, Isol
National Instruments 5938 185183B-01 PCI Card 50-Pin
National Instruments Daqpad-MIO-16XE-50 fully tested
Enlarge
NATIONAL INSTRUMENTS AT- GPIB MODEL 180625-01 NEW NOS
National Instruments AT-GPIB 488.2 ISA Card 181060-01
Expedited shipping available
NATIONAL INSTRUMENTS NI AT-GPIB/TNT CARD GPIB INTERFACE
National Instruments. 16 Port Serial Breakout Box.
National Instruments NI VXI-MXI Interface Module Board
NATIONAL INSTRUMENT 185904A-01 USPP 185904A01
National Instruments SCXI-1180 Feedthrough Panel
One-day shipping available
National Instruments SCXI-1351 One-Slot Cable Extender
One-day shipping available
National Instruments NB-DIO-24 Digital I/O Board - Maci
One-day shipping available
National Instruments GPIB Shielded Cable 8 m
National Instruments MXI Type M1 Bus Cable 180758-02
Expedited shipping available
NATIONAL INSTRUMENTS IMAQ DIGITAL TEST FIXTURE CARD
National Instruments PCI RS-232/485, 4 Port
National Instrument PCI RS-232/485 Isolated 4 port
National Instruments TBX-68 I/O Connector Block; DIN
National Instruments PCI 232/485 8ch board with cable
National Instruments TBX-96 DIN Rail Terminal Block NEW
2 National Instruments AT-GPIB/TNT ISA Card 181830-01
National Instruments GPIB-PCII/IIA ISA 181065-02E Card
(5) National Instruments GPIB 1 M Cables 763061-005
NATIONAL INSTRUMENTS PCI-6503 DAQ I/O CARD PCI-DIO-24
NATIONAL INSTRUMENTS CB-50LP UNSHIELDED I/O CONNECTOR
National Instruments 181830E-01 CCA, AT-GPIB/TNT NEW
National Instruments GPIB-100A
National Instruments NI PCI-6503 (PCI-DIO-24) DAQ Card
SAVE $120 NI National Instruments PCI-6503 Digital I/O
NATIONAL INSTRUMENTS NI PCI-6503 Digital I/O - SAVE $$$
National Instruments 180758-02 Bus Cable M1
National Instruments 182803A-002 MXI-2 Bulkhead Cable
National Instruments 186936A-01, 16 port break out box
NATIONAL INSTRUMENT SCXI-1327 HIGH VOLTAGE BLOCK MODULE
National Instruments MXIbus Cable
National Instruments GPIB-VXI C SIZE MODULE
One-day shipping available
National Instruments CB-68LPR 68-Pin IO Connector Block
National Instruments SH100100 2-Meter E-Series Cable
National Instruments GPIB-485CT-A; GPIB = RS-485/422
NATIONAL INSTRUMENTS PCI-6503 24 chan Digital I/O
NATIONAL INSTRUMENTS PCI-232/485 2CH 84686A-01
National instruments MXI-4 controller copper cable NI
National Instruments- 2M GPIB Cable- 763061-02
National Instruments NB-GPIB Mac NuBus Card 180510-01
Surveying instruments (National Council of Teachers of
NATIONAL INSTRUMENTS NI TB-2725 w / BNC Cable
NATIONAL INSTRUMENTS 185185A-01 185185A01 I/O CARD
One-day shipping available
National Instruments SH100100 1-Meter E-Series Cable
NATIONAL INSTRUMENTS AT-GPI/TNT IEE-488.2 , 181830-01
National Instruments 186936A-01 Serial Breakout Module
VHDCI screw terminal Breakout for National Instruments
Expedited shipping available
National Instruments 181638-01B National Instruments 18
One-day shipping available
National Instruments NI PCMCIA-6830 ISDN Tester AS-IS *
Expedited shipping available
National Instruments NI ExpressCard-8360 AS-IS *
Expedited shipping available
National Instruments USB DAQ - 6009 14-Bit, 48 kS/s NEW
National Instruments USB DAQ 6009
National Instruments NI PCI-6503 Digital I/O DAQ
National Instruments EXNAT-GPIB
Learning With Labview 8 by Inc National Instruments,...
FAST SHIP! MONEY-BACK GUARANTEE! BEAT THE BOOKSTORE!
National Instruments Digital I/O PC Card DAQCARD-DIO-24
National Instruments FP-TB-1 Terminal Base *** NEW ***
Dombra Kazakh national music instrument
NATIONAL INSTRUMENT 182675-01 USPP 18267501
National Instruments AT-MIO-16F-5
National Instruments PC-DI0-24
National Instruments VXI/VME-PCI8000 Manual
NI PCI-6711 National instruments Labview Ready
National Instruments NI-VXI Programmer Reference Manual
NATIONAL INSTRUMENTS NI-VXI SOFTWARE REFERENCE MANUAL
NATIONAL INSTRUMENTS NI-VXI TEXT UTILI REFERENCE MANUAL
NATIONAL INSTRUMENTS SP200B OSCILLOSCOPE PASSIVE PROBE
NATIONAL INSTRUMENTS AT-GPIB TNT ISA CARD
NATIONAL INSTRUMENTS MODEL# GPIB-SCSI-A SWITCH BOX!
*NATIONAL INSTRUMENTS GPIB-422CT
Expedited shipping available
National Instruments NI-488.2M Functon Reference Manual
National Instruments VXI NI-VXI User Manual
National Instruments Interface Cable P/N 185576B-15
776335-96 National Instruments Analog Interface Board
NATIONAL INSTRUMENTS NI-DAQ SOFTWARE WINDOWS 95/NT/3.1
National Instruments GPIB-PCII ASSY 180100-02
NATIONAL INSTRUMENTS AT-GPIB DAQ ISA BOARD IEEE-488.2
National Instruments CB-50LP Unshielded I/O Connect
National Instruments IEEE 488 GPIB Card P/N -181060-01
National Instruments AT-GPIB 181060-01 Rev. C2 ISA Card
National Instruments AT-GPIB 181060-01 Rev. E ISA Card
National Instruments 181060-01 AT-GPIB Card IEEE 488.2
NATIONAL INSTRUMENTS AT GPIB TNT PLUG N PLAY IEEE488.2
NATIONAL INSTRUMENTS 16-PORT SERIAL BREAKOUT BOX RS-232
National Instruments Basics 1 Introduction Manual + CD
National Instruments AT-GPIB / TNT PnP 181832E-01 488.2
NATIONAL INSTRUMENTS PCI-232/485 ISOLATED 4-CHANNEL DAQ
NATIONAL INSTRUMENTS PCI-8432 ISOLATED 4-PORT DAQ RS232
National Instruments PCIStep 184903B-12
NATIONAL INSTRUMENTS 4-PORT RS-232 PCI SERIAL 185729C
National Instruments AT- GPIB/ TNT Card
National Instruments AT- GPIB/ TNT IEEE-488.2 Card
National Instruments Cable for use in NI-DAQ and SS-DAQ
National Instruments 182885E-01 Plug/Play Card NOS
National Instruments MXIbus Bulkhead Cable MB-4 66-PIN
National Instruments (NI) AT-GPIB/TNT
NATIONAL INSTRUMENTS PCI-DIO-96 DIGITAL I/O DAQ BOARD
National Instruments 68-pin Connector Kit 776832-01
One-day shipping available
National Instruments F Bus Card Fieldbus NI# 1837690
NATIONAL INSTRUMENTS NI 185205A-01 CABLE PSH32-4DB9
National Instruments AT-MIO-16E-10 ISA PC Card LabView
68 Pin MALE Breakout for National Instruments - USED
National Instruments SC-2050 #100636
NATIONAL INSTRUMENTS PCI-8430 RS-232 INTERFACE 4-PORT
VHDCI Breakout for National Instruments NI PCI-6229
Expedited shipping available
FLKM 50 - 50 Pin Breakout DIN Mont National Instruments
National Instruments 180760-02 MXI BUS Cable
VHDCI Breakout for National Instruments NI "M"seies NEW
Expedited shipping available
VHDCI Breakout for National Instruments NI SCSI ....NEW
Expedited shipping available
National Instruments PCI-6503 24 bit Digital I/O
National Instruments GPIB Installation Guide
National Instruments NI SC-2070
National Instruments Type X2 763507-02 cable
National Instruments PCIStep 4Axis Open Loop Controller
National Instruments IMAQ-A6822
NATIONAL INSTRUMENTS MXI-2 CABLE 182803A-002
National Instruments Terminal Box - TXB-68
National Instruments AT-GPIB 181060-01 Rev. C2
National Instruments. ER-8. Electromechanical Relay
National Instruments. SCXI-1322. HIGH-VOLTAGE TERMINAL
National Instruments. SCXI. RS485 / Parallel Adapter.
NATIONAL INSTRUMENTS NI-488.2 USER MANUALS WINDOWS/DISK
NATIONAL INSTRUMENT 777145-01 NSFP 77714501
National Instruments AT-GPIB/TNT Plug & Play 181830E-01
在線咨詢 
