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火灾危险等级
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火灾危险等级
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classification of fire hazards
火灾危险等级
根据火灾荷载(由可燃物的性质、数量及分布状况决定)、室内空间条件(面积、高度)、人员密集程度、采用自动喷水灭火系统扑救初期火灾的难易程度,以及疏散及外部增援条件等因素划分设置场所的火灾危险级别。
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water-saving product certification
water-saving society
water scooter
water seal
water security
water self-purification
water sensitive urban design
watershed
watershed adaptive management
watershed area
watershed eco-hydrological process
watershed ecological processes
watershed ecology
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watershed ecosystem health
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watershed environmental planning
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Watershed improvement
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watershed management in mountain
watershed managementlaw
watershed management planning of ancient Dongting Lake in China
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