| 1. | The vacuum valve opens to admit air .
真空阀开启以补充空气。 |
| 2. | Ships and marine technology . pressure vacuum valves for cargo tanks
船舶技术.货槽用压力真空阀 |
| 3. | Ccevv coolant control engine vacuum valve
冷却水温控制引擎真空阀 |
| 4. | Ships and marine technology - pressure vacuum valves for cargo tanks
船舶与海上技术货油舱压力真空阀 |
| 5. | Ships and marine technology - pressure vacuum valves for cargo tanks
船舶与海上技术.散货船真空压力阀 |
| 6. | Ships and marine technology - pressure vacuum valves for cargo tanks
船舶和海洋技术.货油舱用压力真空阀 |
| 7. | The same is true of the vacuum valves in radio or television sets
用于收音机、电视机的真空电子管也是如此。 |
| 8. | Tvv thermal vacuum valve
水温传感控制真空点火正时阀 |
| 9. | Vent pressure vacuum valve
通风系统的压力调节阀 |
| 10. | Tiv thermactor idle vacuum valve
热控怠速真空阀 |
