This means the program statements executed in the loop body must change the value of the expression — or else the loop will never end.

这意味着循环体中执行的程序语句必须要改变表达式的值，否则循环将无法结束。

youdao

Then, this thesis applies IP control algorithm to change controller in outer loop but not in inner loop based on basic double closed loop control system.

然后，本文在传统双闭环控制的基础上，内环的控制算法不变，改变外环控制器的设计算法，主要采用IP控制方案。

youdao

Accidentally left out of the name-change loop, Victor's pressing plant attached "Livery Stable Blues" labels to the records instead.

WSJ: Start Spreadin' the Blues | By Marc Myers

That means hiring and involving the right people, communicating the change and installing closed-loop systems and processes to track it closely.

FORBES: Buyer's Recourse: Cashing In On Procurement Savings