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中国的森林
释义
中国的森林
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理学
中国植被地理
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forests in China
中国的森林
森林是以乔木种为建群种、乔木层盖度>20%的植物群落总称,还包括高度大于5米,主秆明显的竹类为建群种的竹林,以及分布在(石质化、海岛、海滨、山顶等)特殊生境的乔木矮林。林学定义森林为以乔木为主体的生物群落及其环境因素共同构成的生态系统,包括林地和疏林地。
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direct product of topological groups
direct product ring
direct product set
direct product space
direct product topology
direct proof
direct proportion
direct proportionality
direct proton decay
direct radiation grafting (simultaneous radiation grafting)
direct ratio
direct reaction
direct reaction model
direct recombination
Direct Recording of Infantile Tuina
direct-reduction iron
direct-reduction ironmaking
direct reduction reaction in blast furnace
direct reeling
direct refutation
direct regulating method
direct reporting network
Direct Response Marketing/ Direct Marketing
Direct-Response Television Marketing
directrix
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