The third is micro friction surveyor's apparatus' PWM electronic machinery test.
微小摩擦力测试仪的PWM电机调速。
Based on the analysis of the friction forces encountered by micro-cable or micro-duct to be blown in, the practicability of the utilization of old cable ducts with resident cable is illustrated.
根据用气送技术安装新设微光缆或微管道时的摩擦力分析，说明了再利用已占用管道的可行性。
An optical testing method of micro-friction and its principle was introduced to characterize the friction properties of material surface under microcosmic conditions.
为了测试微观条件下材料表面的摩擦学性能，给出了一种微摩擦力的光学测试方法。
The friction drive mechanism moves well even when driven at high frequency and with long strokes, so it can be used with open-loop control systems for micro displacement.
进给速度可通过改变驱动脉冲的频率调节，机构在高频驱动大位移动作时亦表现出准确的步进特性，可用于小型机电系统的开环进给驱动。
The effects of micro-hole valve of homogenizer on bacteria's surface structure showed cell wall friction damage and cell membrane breakage.
微孔均质阀对细菌表层结构的破坏形式表现为细胞壁擦伤和细胞膜破裂。
The working principle of the developed micro-tribological test apparatus was described and the detailed experiments were done with the apparatus for the surface friction of Cu and al.
详细介绍了测试仪的工作原理，并利用该仪器对铝和铜的表面进行了测试。
The working principle of the developed micro-tribological test apparatus was described and the detailed experiments were done with the apparatus for the surface friction of Cu and al.
详细介绍了测试仪的工作原理，并利用该仪器对铝和铜的表面进行了测试。
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