曲轴箱压缩式发动机
crankcase compression engine
半封闭式压缩机组
accessible hermetic compressor unit
semi-hermetic compressor unit
闭式曲轴箱通风装置
closed-crankcase ventilating system
closed crankcase ventilating system
密闭式压缩机组
hermetically-sealed compressor unit
全封闭式压缩机内置电机
build-in motor of all-enclosed compressor
离心式压缩机机组
centrifugal compressor units
发动机曲轴箱机油通气孔
engine crankcase oil breather
发动机曲轴箱机油油位
engine crankcase oil level
半封闭式压缩冷凝机组
semihermetically sealed condensing unit
全封闭式压缩冷凝机组
hermetically sealed condensing unit