The wire and electric cable's choice is one of for in electrical power distribution system design primary coverages.
导线和电缆的选择是供配电系统设计中的主要内容之一。
Primary circuit scheme design of electrical apparatus is an important procedure in electrical apparatus manufactory, it is necessary to improve validity and efficiency of this procedure.
成套电器的一次方案设计排列图在成套电器生产企业中占有重要的地位，提高一次方案排列图设计的正确性及效率非常必要。
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