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Kubler 8.5000.b158.5000 

雪為什么有干濕之分？

去年冬天，東北大姐在雪地上洗貂皮大衣的場景引起熱議。

對此感到驚奇的多是南方的小伙伴，畢竟南方少見雪，就算積累起來，也是又黏又濕，很難想象把衣服往雪地上拍打的清潔方式。

而在北方，身上落了雪，抖一抖就都散落了，衣服干燥如初。

同樣是六邊形冰晶，怎么在南北還有干濕之分？

南北的差異就在于氣溫。在雪花形成之初，它們確實都是美麗的六邊形冰晶，然而落下之后，它們的“人生”就走上了不同的道路。在氣候相對溫和的南方，即使下雪了，近地面氣溫也可能在零度以上，于是雪花在接近地面時開始融化，有的完全變成雨滴，形成雨夾雪，或者直接變成一場冷雨。雪中帶水，自然就變得濕黏了。

而北方冬天零下十幾度都很正常，由于冷得極端，雪下得也干脆，雪花片片分明，六邊形冰晶可以完美落地，不摻水分。這樣的雪蓬蓬松松，含有大量孔隙，這種結(jié)構(gòu)和活性炭類似，可以吸附污物，所以確實能起到一定的清潔作用。

雞蛋為什么不容易捏碎？

只要在稍微硬點的表面上輕輕一磕，雞蛋就立即破裂。但是用手握住整個雞蛋使勁捏，卻未必能把雞蛋捏碎。

雞蛋的這種抗壓能力來自于它的獨特卵形。握住雞蛋時，手掌順著雞蛋的曲面施力，壓力被曲面相對均勻地分散到各處，于是局部壓強減小了，雞蛋也就不容易破碎。而磕雞蛋是將壓力集中于蛋殼表面一點，即使壓力本身不大，由于施力點面積極小，壓強也可以很大，雞蛋就被輕而易舉地?fù)羝屏恕Ｒ虼耍绻阆胼p松表演捏爆雞蛋，只需要戴個戒指就行。

同理，母雞孵蛋時整個身子壓在雞蛋上都沒事，而剛孵化的小雞用喙就能輕松啄破蛋殼鉆出來。

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ABB Robotics Sensor Module DSQC-256A DSQC256A

ABB YB161102-AD DSQC103 S2 R/D Exciter Board

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ABB DSQC-223 DIGITAL I/O BOARD FOR IRB300 ROBOT

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ASEA Brown Boveri, ABB DSQC 103

ABB 3HAB 2211-1 SYSTEM BOARD DSQC 256A ~ Used Surplus

ABB Robot DSQC 223 16x2 Analog I/O Board YB560103-AL

ABB 3HAB8801-1/2 ROBOTIC SERVO AMPLIFIER DSQC 266G

ABB Board DSQC 266 T, P/N: 3HAB-880201/2B

ABB YB560103-CF/1 Circuit Board DSQC 237 402-165

ABB DSQC 224 Combination I/O Board

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ABB 3HNE 00025-1/07 DSQC 350 I/O MODULE

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ABB 2668180-107/1 POWER UNIT BOARD DSQC102 YB161103 NEW

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Kubler 8.5000.b158.5000