Take raising the system accuracy as the purpose, simple practical as a principle and designed the fuzzy controller of PID.

以提高系统精度为目的，简单实用为原则，设计了模糊pid控制器。

youdao

This paper introduces the basic structure and the work principle of the multi-purpose auto-control health care bed.

介绍了机电一体化新产品——多功能自动控制保健床的基本结构和工作原理。

youdao

Societies in the voluntary, equality, dedication, mutual help, and the purpose of progress to self-training and improve the overall quality of the individual ﹑ the principle of serving the community.

本社团本着自愿、平等、奉献、互助、进步的宗旨，以锻炼自我，提高个人综合素质﹑服务社会为原则。

youdao

He understood American power, in all its complexity, and believed that when it is applied with purpose and principle, it can tip the scales of history.

WHITEHOUSE: Remembering Richard Holbrooke

The main purpose of thought experiments, though, is to show that a problem is soluble in principle and so to encourage others to try to solve it in practice.

ECONOMIST: The universe, it appears, may not be alone