力臂

lìbì
lever arm (i.e. perpendicular distance from the fulcrum to the line of force)

CEDICT

  1. (physics) lever arm
  2. lever arm

Wiktionary

物理学上指槓杆上支点至力点的距离。

重編國語辭典

Entry Composition

1 力 lì
  1. power
  2. force
  3. strength
  4. ability
  5. strenuously
2 臂 bì arm