?容许本底水平

... subthreshold background 释义：阈下背景 allowable background level 释义：容许本底水平 scattered background grain 释义：散射造成的本底银颗粒 ...

?释义容许本底水平

... 容许本底水平 allowable background level 释义容许本底水平 allowable background level 操纵子有一个本底水平 basal level ...