問(wèn)答題

【簡(jiǎn)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(shí)，管中的液體上升――它上開(kāi)的高度以被標(biāo)定以指示溫度。

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【簡(jiǎn)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(cè)量一種流量的最普通方法是根據(jù)這樣一個(gè)原理：即為一個(gè)管子中有一個(gè)收縮截面(一個(gè)直徑減少的截面)或縮頸，液體由此頸向下游流...

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【簡(jiǎn)答題】翻譯：There are special types of valves designed to be operated by control instrument rather than by hand.

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