| 1. | Another problem can occur rarely if backflow of process gas is permitted into the secondary air feed line .
如果工艺气体回流入二段空气管线，能发生另外的很少发生的问题。 |
| 2. | Reduced pressure detector assembly backflow preventer
减压检测器组合防回流装置 |
| 3. | Double check detector assembly backflow preventor
双重检验检测器组合防回流装置 |
| 4. | Air braking systems ; shuttle valve with backflow
气压制动系统.回流循环阀 |
| 5. | The entire automatic wave ridge welds , the backflow welding machine
全自动波峰焊回流焊机 |
| 6. | Double check valve backflow - prevention assembly
双止回阀防回流组件 |
| 7. | Numerical analysis of backflow distance of smoke in mine fire
矿井火灾烟流滚退距离的数值模拟 |
| 8. | Performance requirements for hose connection backflow preventers
软管连接防回流装置的性能要求 |
| 9. | 14 backflow prevention assemblies 14 test procedures
逆流预防总成 |
| 10. | Dual check valve type backflow preventers
双重止回阀型防回流装置 |
