真空管道运输的可行性已经得到国内外专家的论证。
The feasibility of ETT (Evacuated Tube Transportation)has been verified by foreign and domestic experts.
这样可以为中央真空管道提供防护屏以免被压碎或击穿。
This will provide a protective shield around the central vacuum tubing to help prevent it from being crushed or punctured.
两个镀膜室通过预抽真空管道和蝶阀、高真空三通管道和闸板阀组成一个整体。
Two film plating Chambers are formed into a whole via a forvacuum pipeline, a butterfly valve, a high-vacuum three-way pipeline and a gate valve.
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