其中信用卡有效收入不足是由我国信用卡循环信用率偏低、商户佣金费率偏低和各家银行信用卡免年费政策的实施导致的；

The lack of valid credit card is due to the low rate of revolving credit usage, low commission rate from merchants and annual fee waiver policy;

youdao

POS机上的数据操作主要是将POS机上的数据转存到数据库或数据文件中，而会员卡再发行系统则可以通过将失效会员卡循环利用，从而保证成本控制。

The data operation on POS is to transfer data and save into data base or data files, while the member card re-emission system is used to recycle run out member card and reduce cost.

youdao

我们要研究，熵，热机，卡洛循环等概念。

We're building up to entropy and to engines, Carnot cycles, etcetera.

youdao

So the first step to doing that is I want to just generalize our results so far for a Carnot cycle.

第一步,首先来推广一下,卡诺循环的结果。

麻省理工公开课 - 热力学与动力学课程节选

Now, if we go back to our Carnot cycle which is a set of reversible paths, it's useful to compare this to what happens in an irreversible case.

如果回到卡诺循环,它是由一系列可逆过程组成，我们将它,和不可逆过程的情况相比较。

麻省理工公开课 - 热力学与动力学课程节选

And remind you that inside of here, I'd better be changing the variable. All right, if that variable that's counting is not changing I'm going to be stuck in an infinite loop, so I ought to that, right, expect somewhere in there, a change of that variable. All right?

我最好改变了计数器的变量值，好，如果计数的变量没有变化的话，我就会被卡在一个无限循环里面,因此我应该【不可闻的声音】,对，在这里的某个地方，改变下计数器的变量，对不对？我要做的最后一件事情就是？

麻省理工公开课 - 计算机科学及编程导论课程节选