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Classification of environmental conditions . part 2 : environmental conditions appearing in nature . precipitation and wind 环境条件分类.第2部分:自然环境条件.第2节:降水和风
Classification of environmental conditions . part 2 : environmental conditions appearing in nature . fauna and flora 环境条件分类.第2部分:自然环境条件.第7节:动物群与植物群