| 单词 | line of force |
| 释义 | line of force【电】 力线 line of force line of force n.（名词） 【复数】 lines of force A theoretical line in a field of force, such that a tangent at any point gives the direction of the field at that point.力线：力场上理论想象线，任一点的切线指向那一点的力场方向 |
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