| 1. | A shaft on the piston forms the armature of a coil .
活塞轴作线圈的衔铁。 |
| 2. | The piston moves by steam pressure .
活塞在蒸汽压力下运动。 |
| 3. | Some pistons have seating rings of metal or leather .
有些活塞上有金属或皮革的密封环。 |
| 4. | A pump uses valves and pistons .
泵使用阀和活塞。 |
| 5. | The push rod was screwed into a miniature piston head .
这根推杆拧紧在一个微型的活塞头上。 |
| 6. | Heat is thereby converted into mechanical energy of the piston .
热由此转换成活塞的机械能。 |
| 7. | Steam in a cylinder expands to push a piston outward .
气缸中的蒸汽膨胀并推动活塞向外运动。 |
| 8. | The connecting rod is attached to the piston by the piston pin .
连杆与活塞的连接是采用活塞销。 |
| 9. | In a double-acting engine there is only one piston per cylinder .
在双作用发动机中，每个汽缸里只有一个活塞。 |
| 10. | A molecule striking an advancing piston recoils with increased speed .
撞在前进中的活塞上的分子，会加速反跳。 |
