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立即威胁生命或健康浓度
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立即威胁生命或健康浓度
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工学
立即威胁生命或健康浓度
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immediately dangerous to life or health concentration
立即威胁生命或健康浓度
有害环境中空气污染物浓度达到某种危险水平,对生命立即或延迟产生威胁,或能导致永久性健康损害,或影响准入者在无助情况下从密闭空间逃生。简称IDLH。
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scene understanding
scenic and historic areas
Scenic and historic area tickets
scenic area law
scenic art
Scenic Byway
Scenic China
scenic forests
scenic model
scenic resource
scenic resource grade
scenic spot planning of scenic regions
scenic-tourist town
scenic village or town
scenioscope
scenography method
scented tea
scented tea processing
scented tea savoring
scent gland
scent marking
scent-tracking
Sceptre
sceptre
sceptron
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