转盘马达旋转组件
swing motor rotating group
swing motor rotary group
转盘马达安全压力
swing motor relief pressure
转盘马达壳排放试验
swing motor case drain test
转盘马达停车制动器
swing motor parking brake
转盘马达停车制动器松放
swing motor parking brake release
转盘马达液压油油尺管
swing motor oil dipstick tube
转盘马达油尺管
swing motor dipstick tube
电起动马达组件
electric starting motor group