built-in motor

基本解释

Built-in volumetric motor pump ;
内置马达泵和流量计；
www.ty-cafe.com
The motorized spindle is equipped with a built-in motor, so that "zero transmission" is realized.
电主轴采用了中置式电机，实现了机床的“零传动”。
Three face turn billboard but can be driven by a built-in motor MITSUBISHI column rotation, rotation three surface display, making it can only accommodate one ad space into three advertising space!
三面翻楼顶大字制作广告牌却可以凭着内置电机带动三菱柱转动，轮换三面展示，使得原本只能容纳一个楼顶大字制作广告位的空间变成三个楼顶大字制作广告位！

Dr Baker reckons that costs can be cut if the launch rocket uses the satellite's guidance computer instead of having its own, and if the satellite's built-in rocket motor is bolstered to do the work now performed by a launch rocket's upper stage.
ECONOMIST: Space