角速度,是角度随时间改变的快慢。

Remember angular velocity is just the rate of the change of the angle over time.

youdao

那些随时间改变的成本，比如易耗品及材料成本等等。

Those that vary from time to time, like the consumables, material costs, etc.

youdao

B：那些随时间改变的成本，比如易耗品及材料成本等等。

B: Those that vary from time to time, like the consumables, material costs, etc.

youdao

Your mortgage payment is constant through time but the fraction of it that goes to paying off principal versus interest changes through time and it just changes as dictated by this formula.

抵押贷款每月还款是固定的,但是其中本金和利息的比例关系,会随时间而改变,这是由这个公式所决定的

耶鲁公开课 - 金融市场课程节选