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1.The friction tachometer is used to measure the friction between two surfaces.
摩擦计用于测量两个表面之间的摩擦力。
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2. The engineer used a friction tachometer to test the new material's performance.
工程师使用摩擦计测试新材料的性能。
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3.The friction tachometer was used to detect any potential problems with the machine's operation.
摩擦计被用来检测机器运行中的潜在问题。