line of force

基本解釋

A magnetic line of force is a closed line, that is, it forms a loop without end.
磁力線是一條封閉線，即，它形成一條沒有盡頭的圈。
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An electric line of force is also a closed line; it too forms a loop and returns on itself.
電力線也是一條封閉線；它形成一個圈，返廻原処。
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After the uninterrupted magnetic line of force treatment, the Masurium tower already continuously 6 months successes controlled the depression condition.
經(jīng)過不間斷的磁力線治療，瑪塔已經(jīng)連續(xù)6個月成功控制住了抑鬱癥病情。

You know, one famous tactic is--if you have an infantry force coming forward, you send tanks in it to break up the line of the infantry, so that you can defeat the infantry in that way.
最有名的戰(zhàn)術(shù)是,如果有敵方步兵逼近,你把坦尅派過去,破壞他們的步兵陣型,以這種策略對付步兵
耶魯公開課 - 古希臘歷史簡介課程節(jié)選

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an imaginary line representing a field of force, such as an electric or magnetic field, such that the tangent at any point is the direction of the field vector at that point