Electric Cables Handbook is an extensive source of up-to-date and essential information for electrical engineers, contractors, supply authorities and cable manufacturers.
电缆手册是由多达到日期和电气工程师，承包商，供应部门和电缆制造商的基本信息来源广泛。
The utility model relates to power supply technique of an electric source.
本实用新型涉及电源供电技术。
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