／wHo推荐的参考标准，Hg、zn、 Cu的摄入量则小于参考标准． 4．2单一重金属的人群健康风险 目标危险系数(the target hazard quotient，THQ) 是假定吸收剂量等于摄人剂量，以测定的人体摄入 剂量与参考剂量的比值为评价标准，如果该值小于 1，则
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况且，要是敌军不顾平民死活，故意将其安置在军事目标附近，这时候是减少平民还是减少自己的危险系数就要纳入进攻者的考虑范畴了。
Moreover, if the enemy puts civilians at risk by deliberately placing military targets near them, "this is a factor to be taken into account in favour of the attackers".
由于安全系数的目标函数是非凸的、多变量的并且存在多个极小值，所以一般边坡最危险滑弧的搜索是困难的。
Because the objective function of the safety of factor is nonconvex, multi-variable, and existing many minimums, searching the most dangerous failure surface usually is difficult.
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