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第一期YZ—150型余摆线真空泵的研制 ……………抚顺真空设备厂 东工机械系72届真空毕业实践队(1)提高旋片泵抽气速率的探讨……………………合肥工大真空专业74届工农兵学员(11)SZn—1型四极质谱计………南京工学院 南京电子管厂 上海电动工具研究所(19)蒸汽喷射真空泵在铁合
The first phase of the YZ-150 type trochanter vacuum pump development ... ... Fushun Vacuum Equipment Factory East Machinery Department 72 vacuum graduation practice team (1) to explore the rotary vane pump pumping rate .................. ...... Hefei University of vacuum professional 74 workers and peasants and soldiers (11) SZn-1-type quadrupole mass spectrometer ..... Nanjing Institute of Nanjing tube plant Shanghai Electric Power Tools Institute (19) steam jet vacuum pump in iron