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mean lethal dose
anim.husb.	半致死量
earth.sc.	平均致死剂量
el.	平均致死剂量［即50%存活剂量］【核】
otorhinol.	平均致死死量
tech.	中间致死量
water.res., ecol.	中间致死剂量
English thesaurus
mean lethal dose
mil., logist.	The amount of nuclear irradiation of the whole body which would be fatal to 50% of the exposed personnel in a given period of time. 2. The dose of chemical agent that would kill 50% of exposed, unprotected and untreated personnel. (FRA)