...e (PVC)tubing for medical uses医用软聚氯乙烯管材 Single-stage reciprocating refrigerant compressors活塞式单级制冷压缩机 Safety requirements of fan for air conditioning空调用通风机安全要求 ..
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...tage radial compressor ; stage radial compressor 活塞式单级制冷压缩机 Singlestage reciprocating refrigerant compressors ; stage reciprocating refrigerant compressors 单级离心式压缩机 singlestagecentrifugalcompressor ; stagecentrifugalcompre...
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