The enamel surface microhardness was measured by a Leitzs microhardness tester.采用维氏显微硬度仪测定经饮料浸泡后牙釉质表面显微硬度的变化.The microstructure and microhardness of ths laser nulted Fe - Sb alloys were studied.研究了激光表面熔化Fe-Sb合金的显微组织和显微硬度...
结果表明,削片机主轴振动是一种混沌运动.Result indicates that combustion vibration of chippers chief shaft is a kind of movement of chaos.这些力的状况影响木片质量 、 削片能耗及削片机的载荷.The forces affect the quality of the chip, cutting energy consumption, and ...