The box cover is provided with a temperature control system, in the constant temperature box rear drain valve and an external power supply socket.

箱盖上有控温系统，在恒温箱的后部是排水阀及外接电源插座。

youdao

The 60-c3 is an external circulation type constant temperature water tank provided with a thermo-module.

C3是提供加热模块的外部循环形式的温度固定水箱。

youdao

So this isn't the most useful form that we can have, but what we'll see shortly is that from this, we can then derive further criteria for essentially any set of variables or any set of external constraints, like constant temperature or pressure or volume and so forth that we might set.

所以这不是我们所能得到的最有用的形式，但是我们会很快看到，我们能够进一步推导出包含任意变量,或者任意约束的自发过程判断标准，比如说恒定的温度，压强,体积或者其他我们能够给出的约束。

麻省理工公开课 - 热力学与动力学课程节选