| 21. | In the presence of lubricants the effect of the guide material on friction is overshadowed by the lubricants. |
| 当有润滑剂存在的情况下，导纱杆材料对摩擦的影响则为润滑剂所掩盖。
|
| 22. | If there is friction between them, each should make allowances for the other. |
| 如果他们之间有芥蒂，那就应该相互谅解。
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| 23. | If there is friction between them, each should make allowances for the other.. |
| 如果他们之间有芥蒂，那就应该相互谅解。
|
| 24. | East-West friction . |
| 东西方的冲突。
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| 25. | the coefficient of friction |
| 摩擦系数
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| 26. | excite heat by friction |
| 摩擦生热
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| 27. | a friction match |
| （通过摩擦点火的）火柴
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| 28. | reduce friction loss |
| 减少摩擦损耗
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| 29. | lead to endless confusion [ friction ] |
| 造成无休止的混乱[摩擦]
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| 30. | a loss due to friction |
| 摩擦损失
|