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化工部第一设计院主编的《初步设计内容深度及图例、符号的流一规定》和化工部第五设计院主编的《施工图设计内容深度编制办法》两项业务建设项自己完成初稿。六月上旬分发给部分设计单位征求
The first draft of the preliminary design content depth and legend, the flow of symbols, edited by the chief editor of the First Design Institute of the Ministry of Chemical Industry and the two business construction items of “Depth Preparation Method of Construction Drawing Design Content” edited by the Fifth Design Institute of the Ministry of Chemical Industry completed their own drafts. Distribution to some design units in early June for solicitation