将液体从固体中分开来的最简易方法是什麽?过滤！在此影片中将学习如何有效的用重力过露及真空过滤来进行。
The easiest way to separate a liquid from a solid? Filtration! Learn how to effectively carry out gravity and vacuum filtrations in this video.
试验研究了反重力浇注条件下，铝合金消失模真空低压铸造的充型流动特性。
Mold filling characteristics of Al alloy in vacuum lost foam low pressure casting (VLFLPC) under counter gravity condition were examined.
已有文献资料表明，该地区岩溶塌陷是地下水潜蚀、真空吸蚀、重力及荷载等多方面综合作用的结果。
Others research results showed that the mechanism of karst collapse in this area were latent corrosion of underground water, inhaling corrosion of vacuum, gravity load.
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