| 释义 |
ac·tu·a·tor
\ˈ ̷ ̷ ̷ ̷ˌwād.ə(r), -ātə-\ noun
(-s)
: one that actuates; specifically : any of various electric, hydraulic, or pneumatic mechanisms by means of which something is moved or controlled indirectly instead of by hand (as a motor that turns the rudder of a large ship or moves the elevators of an airplane or an air-brake cylinder operated by a motorman) |