4524合成冷冻机油
synthetic refrigeration oil 4524
氨冷冻机
ammonia refrigerator
ammonia refrigerating machine
ammonia machine
氨冷冻离心压缩机
ammonia refrigerant centrifugal compressor
氨冷冻压缩机
ammonia refrigeration compressor
氨气吸收冷冻机
ammonia absorption refrigerating machine
氨气压缩冷冻机
ammonia compression refrigerator
氨吸收冷冻机
ammonia absorption refrigerator
半导体冷冻
Semiconductor refrigeration
半导体冷冻白内障吸出器
semiconductor cataract freezing extractor