useful work
英
美
- 有用功
双语例句
- In any machine the useful work done by the machine is always less than the work done on the machine.
在任何一部机器里,机器所完成的有用功总是小于对机器所作的功。 - We want to make machines more efficient for the purpose of getting more useful work out of them.
我们希望把机器造得效率更高,以便从中得到更多的有用功。
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