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31. | a pendulous device |
| 摆动装置 |
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32. | oscillating pump |
| 摆动泵 |
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33. | oscillating screw |
| 摆动螺钉 |
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34. | side oscillation |
| 侧摆动 |
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35. | oscillatory load |
| 摆动负载 |
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36. | time of oscillation |
| 摆动时间 |
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37. | Reciprocating Roller |
| 摆动辊 |
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38. | flutter respiration |
| 摆动呼吸 |
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39. | azimuth oscillation |
| 方位角摆动 |
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40. | pendulum therapy |
| 摆动疗法 |
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