universal pocket transit 通用袖珍经纬仪 universal potentiometer 通用电位计 universal process and reproduction camera 万能制版和复制摄影机 ..
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potentiometer universal 通用电位计
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It adopts universal hardware circuit of trimmer potentiometer and software which has been digitalized so that parameters could be adjusted or modified conveniently and maintained for a long time.
采取了通用的微调电位器的硬件电路和经过数字化处理的软件方法，使参数的调节及修正既方便又能长期保存。
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