| 1. | A fresh charge of air-fuel mixture will be drawn into the cylinder as the piston moves down toward . 随着活塞朝下止点的向下运动,一些空气燃料混合气的新鲜充量将被吸入气缸。 |
| 2. | 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。 |
| 3. | Bbdc before bottom dead center 在下止点前 |
| 4. | Abdc after bottom dead center 在下止点后 |
| 5. | Bbdc before bottom dead center 下止点前 |
| 6. | Abdc after bottom dead center 下止点后 |
| 7. | Budc before upper dead center 上止点前 |
| 8. | Btdc before top dead center 在上止点前 |
| 9. | Atdc after top dead center 在上止点后 |
| 10. | Atdc after top dead cetner 上止点后 |