1.
He is of a studious habit, and unusually energetic;
他有用功的习惯，而且精力异常充沛。
2.
30 per cent of the current in the circuit is not doing useful work.
这电路中30％的电流不在做有用功。
3.
Tom failed to pass his exam . He regretted not working hard .
汤姆未通过考试，他悔恨当初没有用功。
4.
He regretted not having worked hard.
他很后悔当初没有用功学习.
5.
Promising is a diligent student.
用功的学生有前途。
6.
There is no need to reinvent the wheel.
没有必要再做无用功。
7.
It has other specific functions of its own.
它还有其他的特殊功用。
8.
STUDY ON MVA POWER AND LOSS ALLOCATION(二)
有功、无功功率分摊及网损分摊的研究(二) 有功、无功联合贡献因子及其应用
9.
having no beneficial use or incapable of functioning usefully.
没有有益的价值或功能上无法使用的。
10.
The brush enables fine details to be painted with thin or thick paint.
画笔的功用在于可使下笔处有粗有细。
11.
Evolution of Contemporary Educational Function:From Usefulness to Meaning;
当代教育功能观嬗变:从有用到有意义
12.
An Active Power Compensation Model for Grid-connected Distributed Generation System
一种用于分布式发电系统的有功功率补偿模型
13.
Pragmatically, marked idioms have the functions of belongingness, attraction, rhetoric, modification and economy.
在语用上，有标记习语有归属功能、吸引功能、修辞功能、限定及节俭功能。
14.
arbitray phase angle power relay
有功无功功率继电器
15.
arbitrary phase-angle power relay
有功-无功功率继电器
16.
Not all the students study hard.
并非所有的学生都用功念书。
17.
Something useful which may help you to be successful
可能帮助某人成功的某种有用的东西
18.
Giving Applications Location Awareness
使应用程序具有定位功能