servo [ˈsɜ:rvoʊ]

例句:

• In analog computer, an arithmetic unit constructed by a servo system.
  在模拟计算机中, 一种由伺服系统构成的运算部件.
  来自辞典例句
• Servo was swamped with rush order for the Korean war.
  塞尔伏为了朝鲜战争的紧急定货单忙得要死.
  
• Minimum weight and volume are almost overriding requirements for any missile servo.
  对于任何一种导弹的伺服系统来说,使它的重量为最轻和体积为最小,几乎是最主要的要求了.
  
• The blue things, those are servo motors.
  来自VOA
• It's the chatter of servo-motors, the slow whine of monorails, of control signals manipulating remote machines.
  来自BBC
• You can use a Roboduino which allows you to plug a servo directly onto the board without a shield.
  来自ENGADGET