We head off into the passage, bent over like trolls under the low ceiling.
我们沿着通道弯腰前进着，好像巨人来到了矮人国的建筑里。
Would you cut off this passage? I don't think it is necessary.
你能把这一段删去吗？我认为它没必要。
It is used to put through cut off the air passage in vacuum pipeline.
阀门用于接通或切断真空管路中的气流。
It is used to put through or cut off the air passage in vacuum pipeline.
阀门用于接通或者堵截真空管途中的气流。
It is used to put through or cut off the air passage in vacuum pipeline.
CC Q型气动超高真空插板阀用于接通或切断真空管路中的气流。
It is used to put through or cut off the air passage in vacuum pipeline.
CC Q型气动超高真空插板阀用于接通或切断真空管路中的气流。
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