letdown line

基本解释

• [土木建筑工程]下泄管线

英汉例句

权威例句

• What could have been the highlight of the line-up of politicians, Congressman Paul Ryan, turned out to be a letdown.
  FORBES: At National Review Institute Gathering Conservatives Yell Stop. But Are Voters Listening?

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词组短语

短语

• letdown line isolation valve 下泄管线隔离阀

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专业释义

土木建筑工程

• 下泄管线