A second cycle is the self-loop of Task 2, which USES activity form.

第二个循环是Task2的自循环，它采用活动形式。

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General purpose electrical with single loop self contained PID controller.

单通用电气回路自包含PID控制器。

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With applied and simplified structure and self loop mill, this machine needs no pump.

结构实用、简洁，自循环研磨，无须泵浦。

youdao

With applied and simplified structure and self loop mill, this machine needs no pump.

结构实用、简洁，自循环研磨，无须泵浦。

youdao