問答題

【簡答題】翻譯:As it expends it rises in the take -the height to which it rises is calibrated to indicate to indicate temperature.

答案: 當(dāng)液體膨脹時,管中的液體上升――它上開的高度以被標(biāo)定以指示溫度。
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【簡答題】翻譯:The most common means measuring rate of flow of a fluid is based on the principle that if there is a contraction or constriction (a section of reduced diamater) in a pipe,the pressure of a fluid flowing down-stream from the contraction will be lower than that up-stream from the contraction.

答案: 測量一種流量的最普通方法是根據(jù)這樣一個原理:即為一個管子中有一個收縮截面(一個直徑減少的截面)或縮頸,液體由此頸向下游流...
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【簡答題】翻譯:There are special types of valves designed to be operated by control instrument rather than by hand.

答案: 有一些特殊類型的閥門是用儀器而非人工控制的。
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