| 1. | Methods of testing for water - ring vacuum pumps and compressors
水环真空泵和水环压缩机试验方法 |
| 2. | Exploration to energy conservation of water - loop heat pump operation
水环热泵空调系统运行节能探讨 |
| 3. | Application analysis of the water - circle heat pump air - conditioning system
水环热泵空调系统应用性分析 |
| 4. | Working liquid circulation of water ring vacuum system for paper machine
纸机水环式真空系统工作液的循环利用 |
| 5. | Water ring vacuum pumps
水环真空泵 |
| 6. | Methods for thd measurement of volume flow of gas of water - ring vacuum pump and compressor
水环真空泵和水环压缩机气量测定方法 |
| 7. | Methods for the measurement of volume flow of gas of water - ring vacuum pump and compressor
水环真空泵和水环压缩机气量测定方法 |
| 8. | Water - ring prime pump
水环引水泵 |
| 9. | Water ring primer
水环引水泵 |
