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- Presents the energy saving principle of a frequency-controlled pump and points out the applicability of the law of similitude for centrifugal pumps and the conception of constant efficiency curves. 摘要阐述了循环水泵变频调速的节能原理，提出离心水泵相似定律的适用性和等效率曲线概念。
- His wife was a constant inspiration to him. 他的妻子经常鼓励他。
- Her constant complaining just sticks in my craw. 她那不断的诉苦真使我受不了。
- The machinery requires constant maintenance. 这些机器需要经常保养维修。
- I was infuriated by/with their constant criticism. 他们没完没了地批评把我给气坏了。
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- She feels wearisome by the constant noise. 她很厌烦那些没完没了的嘈杂声。
- She matured her novel by constant revision. 她不断修改自己的小说以使其趋于完善。
- We must improve our efficiency as soon as possible. 我们必须尽快地提高工作效率。
- She yelled at him about his constant drunkenness. 她大嚷大叫说他总是烂醉如泥。
- I've had enough of your constant chatter. 我已经听够你那没完没了的唠叨话。
- Their labor efficiency is very high. 他们的工作效率很高。
- She was wearied by the constant noise. 她很厌烦那些没完没了的噪杂声。
- We were most impressed with/by your efficiency. 你的工作效率很高，我们极为钦佩。
- Salaries are kept under constant review. 薪金问题要一直不断审订。
- His constant requests for help taxed our goodwill. 他不断要求我们帮助他，过分利用了我们对他的好意。
- Matter is in constant motion and constant change. 物质总是在不断运动，不断发展。
- The thief went in constant fear of discovery. 那贼时刻都在担心被人发现。
- Our goal is to achieve the maximum of efficiency. 我们的目标是取得最高的效率。
- A diploma is no guarantee of efficiency. 持有文凭不能保证工作效率一定高。
