hermetic compressor meaning in Chinese

封闭式压缩机

Tubes for refrigerating systems with hermetic and semi - hermetic compressors ; outside diameter up to 54 mm ; technical delivery conditions
带密封和半密封压缩机的制冷设备用管道.外径54mm以下
Tubes for refrigerating systems with hermetic and semi - hermetic compressors ; additional technical delivery conditions for capillary restrictor tubes
带密封和半密封压缩机的制冷系统用管道.毛细节流阀的
Acoustics . noise emitted by refrigeration equipments with hermetic and accessible hermetic compressors . test code for measuring the sound power
声学.装有密封和半密封压缩机的制冷设备噪音.声功率测量试验规则