基本解釋密封冷凍壓縮機(jī)詞組短語(yǔ)短語(yǔ)sealed refrigeration compressor detail 密封冷凍壓縮機(jī)sealed refrigeration compressor更多詞組專(zhuān)業(yè)釋義經(jīng)濟(jì)學(xué)密封式制冷壓縮機(jī)