11117| 36
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這腳扣該怎么設(shè)計才能卡在這光滑的電桿上 |
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評分
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點評
吸盤防滑是靠材質(zhì)和外形設(shè)計,相當于雪地胎防滑的效果。真空度越高,大氣壓力越大,等于是增大水平摩擦力。
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