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本文重点阐述了采用压电力传感器制成的ＹＤＣ－７８Ｊ型动态测力仪的设计原理，静态与动态性能检定以及用此测力仪对金属与非金属材料进行切削试验的情况。
This article focuses on the design principle of YDC-78J dynamic dynamometer made of piezoelectric sensor, static and dynamic performance verification, and the cutting test of metal and non-metallic materials with this dynamometer.