IDLH
immediate danger to life and health
(産業環境での有害物質の)生命および健康に危険な濃度限界. 30分以内に救出しないと元の健康状態に回復しない大気中有害物質の濃度限界.
immediate danger to life and health; a concentration limit of toxic gas in an industrial environment; issued by the ACGIH(American Conference of Governmental Industrial Hygienists); re
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