计算土方开挖工程量:请问“工作能力和工作效率”用英语应该怎么说，谢谢！

工作效率: work efficiency

Relative explainations:
<efficiency> <operating efficiency> <availability (ratio)> <worked efficiency>

Examples:
1. 我们必须尽快地提高工作效率。
We must improve our efficiency as soon as possible.
2. 他们的工作效率很高。
Their labor efficiency is very high.
3. 你的工作效率很高, 我们极为钦佩.
We were most impressed with/by your efficiency.
4. 调整，调节调整，如马达或发动机，以便使其处于最佳工作状态或最高工作效率
An adjustment, as of a motor or an engine, made to improve working order or efficiency.

工作能力:
1. working capability
2. operational capability
3. operation capacity
4. service ability

Examples:
1. 我钦佩你的工作能力。
I compliment you for fine work.
2. 他的渊博的学识和工作能力得到了承认。
His thorough knowledge and competence were recognized.

工作能力:capability (work在此不必翻译出来，capability直接有工作能力的意思)
工作效率:work efficiency

工作能力Working ability,
工作效率 working efficiency

the working ability and efficiency

competence和efficiency