inapparent

an inapparent infection

不感染

Its ratio of inapparent infection to apparent infection is about 100:1.

该病隐性感染与性感染比例约为100：1。

when the wind speed and windward are steady , the concentration value of dimensional spot change along with time is inapparent, it may be considered steady.

在稳定风流下，空各点气体浓度值随时变化不，其浓度场是稳态。