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Friction can be considerably reduced and the life of the machine prolonged by careful lubrication.
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仔细润滑机器，能大大减少磨擦而延长机器的寿命。 |
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Friction causes a rolling ball to stop finally.
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摩擦力使得一只滚动的球最终停了下来。 |
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Friction generates electricity.
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磨擦生电. |
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Friction gradually caused the sliding box to slow down and stop.
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摩擦力使向下滑的箱子渐渐慢下来后停住。 |
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Friction stir welding (FSW) is a solid-phase welding operated under the melting point of workpiece materials; it's a technology which uses an anti-friction tool to join the sheet or shaped materials in rotary circs, and can be used in the welding of alumi
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摘要摩擦搅拌焊(FSW)是在低于工件材料熔点情况下操作的固相焊接，是在旋转情况下通过一种耐磨工具将板材或型材材料连接的工艺，可用于铝、镁、铜等的焊接，焊接质量优良。 |
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Friction stir welding process can improve mechanical properties as well as decrease distortion and residual stress.
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采用搅拌摩擦焊连接镁合金可以避免熔焊时产生的焊接缺陷，且具有焊后变形小、残余应力小等优点。 |
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Friction test and application show that, all the physical properties of the asbestos-free brake shoes exceed that stipulated in relative Chinese Standard, and their service life is one times higher than that of asbestos brake shoes.
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摩擦试验检测和应用实践表明，无石棉刹车块的各项物理性能优于国家标准，其使用寿命比石棉刹车块提高1倍以上，且无环境污染。 |
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Friction wears away metal in the moving parts, which shorte their working life.
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运动部件间的摩擦力使金属磨损，这就缩短了运动部件的使用寿命。 |
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Friction wears away metal in the moving parts, which shortens their working life.
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运动部件间的摩擦力使金属磨损极品公子全文下载这就缩短了运动部件的使用寿命。 |
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Friction wears away metal in the moving parts,which shortens their working life.
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运动部件间的摩擦力使金属磨损，这就缩短了运动部件的使用寿命。 |
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Friday afternoons are left free for revision.
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留出星期五下午的时间做复习。 |
