Read Edit View history 力臂 lìbì lever arm Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 力臂 · lìbì · lever arm 2026/03/04 力臂 lìbì lever arm the perpendicular distance from the axis of rotation to the line of action of a force 增加力臂可以更轻松地抬起重物。 noun created sense Mar 4, 2026, 02:25 AM