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一、前言根据1986年国家科委下达的“星火计划”项目《河北省太行山、燕山山区综合开发》,由河北省山区技术研究开发中心和承德地区、唐山、秦皇岛、承德市四个地市科委共同组成的燕山山区东段技术开发协作组进行了《河北省燕山山区东段综合技术开发研究》,
I. Preface According to the “Spark Plan” project “Comprehensive Development of Taihang Mountains and Yanshan Mountain Areas in Hebei Province” issued by the State Science and Technology Commission in 1986, the research and development centers of mountainous areas in Hebei Province and four prefectural and municipal branches of Chengde, Tangshan, Qinhuangdao and Chengde Commission jointly organized by the eastern section of Yanshan Mountain Technical Development Collaboration Group conducted a “comprehensive research and development of integrated technology in the eastern section of Yanshan Mountain in Hebei Province”