The paper briefly explains the contravariant principle and the effect of the return of afterflow, suggests the method of rendering the return of afterflow.
简要地说明逆变原理及续流回路的作用，提出了绘制续流回路的方法。
The paper briefly explains the contravariant principle and the effect of the return of afterflow, suggests the method of rendering the return of afterflow.
简要地说明逆变原理及续流回路的作用，提出了绘制续流回路的方法。
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