requisite variety 中文意思是什麼
requisite variety
解釋
必要變化-
5 ) the variety, a famous concept proposed by the precursor of cybernetics, ashby, is extended from variable to systems. with the definition of system variety, the gotten conclusions lead to two new laws of variety in control systems : " the general conservation law of variety " for regulation systems, and " the law of requisite variety " based on the proposed basic information condition for tracking systems
5 ）將ashby提出的變異度的概念由信號推廣到系統，給出了系統的變異度定義，進一步闡述了控制系統的變異度定律:針對調節系統，提出了「廣義變異度守恆定律」 ，對前人的結論進行了修正;針對跟蹤系統，提出了基於基本信息條件的「變異度必備定律」 。 -
The department of english offers a variety of english courses, including series of pre - requisite courses for entry into the major courses and many courses for english training and test programs ( ielts test, etc. )
學院的英語系提供多種英語課程，包括進入專業課學習的系列前導課程和不同形式的英語培訓班，考試課程班（如雅思考試課程） 。
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