资料来源 : pyDict

动臂机构,激励器

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Actuator \Ac"tu*a`tor\, n.
   One who actuates, or puts into action. [R.] --Melville.

资料来源 : WordNet®

actuator
     n : a mechanism that puts something into automatic action