件安装单元 unit mounting: 组件安装mobile mounting unit: 移动式台座mounting of crystal unit: 晶体振子支架unit power mounting: 带动力机组的车装设备; 带发动机的组装件; 发电机组组件安装vibration isolating mounting unit: 减震架组合下载手机词典可随时随地查词查翻译