This paper introduced the principle of AC-contactor working without noise and offered two series electrical controlling circuits. It is a practicable and energy-saving technology.
本文分析了交流接触器无声运行的工作原理，提出了两类电气控制线路。这是一种实用的节能技术。
The controlling system uses CAN wire technology and wire controller. The main controlling part: electrical and hydraulic parts are both imported items.
控制系统采用CAN总线技术及线控器操作控制，主要控制部分：电气、液压元件均为进口件。
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