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| 11. | There are two kinds of drags, parasite drag and induced drag. |
| 阻力有两种：寄生阻力和诱导阻力。 |
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| 12. | Feature: Round pit pattern increase friction resistance, prevent from slipping of goods. |
| 特征：圆坑花纹磨擦系数大，运行中增加阻力，防止物料下滑。 |
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| 13. | elastic resistance |
| 弹性阻力;弹阻力 |
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| 14. | Friction is the resistance to motion betweentwo objects in contact with each other. |
| 摩擦力是在两个相互接触的物体之间因相对运动产生的阻力。 |
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| 15. | My sister insists consistently（一贯、始终） on persistent（持久、稳固） resistance（抵抗、阻力、电阻） to transistor（晶体管） radios |
| 妹妹一贯坚决主张持久抵制晶体管收音机。 |
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| 16. | aerodynamic resistance |
| 空气动力阻力;气动阻力 |
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| 17. | Resistance Level |
| 阻力线、阻力价位 |
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| 18. | As friction manifests itself as a resistance that opposes motion, it is usually considered as a nuisance |
| 摩擦是运动的阻力，因此常被看成讨厌的东西。 |
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| 19. | exhaust resistance |
| 排放阻力，流出阻力 |
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| 20. | dynamic friction; kinetic friction |
| 动摩擦 |
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