| 1. | The vacuum valve opens to admit air .
真空阀开启以补充空气。 |
| 2. | If the pressure builds up excessively, the pressure valve opens to relieve the pressure .
如果油箱内压力过高，则压力阀开启，以降低压力。 |
| 3. | The vacuum-relief valve opens to allow enough air to enter the tank to replace the gasoline pumped from the tank by the fuel pump .
真空阀通向大气，使足够的空气进入油箱，以补充由输油泵从油箱中吸出的燃油所占的面积。 |
| 4. | Valve opening chart at load rejection
甩负荷阀门开启阀 |
| 5. | So the exhaust valve opens before bdc and closes after tdc
因此排气门在下止点之前打开，在上止点之后关闭。 |
| 6. | Evo exhaust valve opening
排气门开启 |
| 7. | Eo exhauxt valve opens
排气门开启 |
| 8. | Io intake valve opens
进气门开启 |
| 9. | Ivo inlet valve open
进气门开 |
| 10. | The mattress should be stored flat and with the valve open until it is to be packed for a trip
气垫储存的时候要放平，阀门打开，知道充气完毕。 |
