And its critical relative humidity is 72 % or so.

所制颗粒吸湿率小,成型率高,溶化率高,临界相对湿度约为72%.

The necessary conditions for the battery effect is that the ambient relative humidity reaches or exceeds the critical relative humidity.

这种氧化反应在本质上大多属于电化学腐蚀电池效应，其发生的必要条件是环境相对湿度达到或大于临界湿度。

Objective To study critical relative humidity and stability of salvianolic acids.

目的研究丹参总酚酸的临界相对湿度及稳定性.