| 1. | For this reason new valves were developed .
为此，研制了新的电子管。 |
| 2. | The safety valve of his anger opened .
他控制怒火的安全阀打开了。 |
| 3. | Streams are switched by solenoid valves .
流路靠电磁阀进行切换。 |
| 4. | The valve shown has a pilot and a bleed orifice .
该阀具有控制孔和流出孔。 |
| 5. | The vacuum valve opens to admit air .
真空阀开启以补充空气。 |
| 6. | All that is required is a valve .
全部所需的就只是一个活门。 |
| 7. | The connecting rod may drive a valve stem directly .
连杆可以直接带动阀门的把柄。 |
| 8. | A pump uses valves and pistons .
泵使用阀和活塞。 |
| 9. | Cars began using caps that incorporated two valves .
汽车开始使用装有两个阀门的油箱盖。 |
| 10. | The valve lifter, a round cylinder, rides on the cam .
气门挺杆为一圆筒体，坐落在凸轮上。 |
