| 1. | The vacuum valve opens to admit air .
真空阀开启以补充空气。 |
| 2. | The machine will start by itself in a few seconds .
机器在几秒钟后会自动开启。 |
| 3. | Most car doors are now fitted with child-proof locks .
汽车门现在大都装有预防儿童开启的锁。 |
| 4. | The pcv valve sticks in the open, maximum-flow position .
把PCV阀固定在开启位置即最大流量位置。 |
| 5. | Knowledge is a treasure, but practice is the key to it .
知识是一座宝库，而实践就是开启宝库的钥匙。 |
| 6. | This partly opens the choke so that an overich mixture is prevented .
这种阻风门的部分开启可以防止混合气过浓。 |
| 7. | The value-opening mechanism includes a valve lifter and a cam on a camshaft .
一套气门开启机构包括一个气门挺杆和一个在凸轮轴上的凸轮。 |
| 8. | 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。 |
| 9. | The purpose of the electric heating element in the choke is to assure slower choke opening .
在阻风门内的电热元件的效用是保证阻风门缓慢开启。 |
| 10. | A canister purge valve is opened periodically to vent the vapor back into induction system .
收集器的清除阀周期性地开启，泄放蒸气使之返回进气系统。 |
