line of action meaning in English

酌线
作用力线
作用线啮合线接触线

What should be our general line of action ?
我们的行动方案应该怎样呢？
But having committed herself to this line of action there was no retreating for bad weather .
她既然已经箭离弦上了，那就不能因为天气不好而退回。
Except when the needle points in the n-s direction, the two forces do not have the same line of action .
只要指南针不是指向N-S方向，这两个力就不在同一条作用线上。
In view of these above-mentioned circumstances, there seemed to be three lines of action deserving of earnest study .
由上述情形观之，似乎有三条行动途径值得我们认真研究。
Theoretical line of action
理论啮合线

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