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| возвратно-поступательное движение (When the air is supplied to the internal cylinder of the actuator, the Piston makes back-and-forth movement and this movement makes those valves and dampers move accordingly. Александр Рыжов) | |||
| перемещение вперёд-назад (ssn) | |||
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back-and- forth movement : 1 短语, 1 学科 |
| 空气流体动力学 | 1 |