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31. | It often takes trouble from outside to weld a family together. |
| 要使一个家庭重归于好,往往需要求助于外力。 |
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32. | To topple, as from power or a high position;fall. |
| 下跌因外力或从高处倒下;倒下 |
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33. | and at the same speed unless it is influenced by a force. |
| 在不受外力影响的情况下作匀速运动。 |
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-- 来源 -- 综合英语第3册 - Unit 7 Famous Scientists Text A |
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34. | cause(sth)to move sharply or quickly,often by force |
| 使(某物)猛然或迅速移动(常指靠外力) |
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35. | Mass flow occurs as a result of external forces. |
| 质体流动的发生是由于外力的结果。 |
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36. | At equilibrium the resultant of all external forces vanish. |
| 在平衡时,所有外力的合力为零。 |
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37. | Are they consistent with blunt force trauma? |
| 有可能是用钝器外力重击所致吗? |
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38. | The velocity of the center of mass is constant in the absence of external forces. |
| 在无外力时,质心的速度是常量。 |
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39. | An outside agent exerts a force P of sufficient magnitude causes to spring to stretch. |
| 施足够大的外力P,使弹簧拉长。 |
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40. | The external forces include reactions (R)as well as applied loads(P). |
| 外力包括反力R和施加力荷载P。 |
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