Methods: The controlled human exposureexperiment was applied in this study.
方法:采用控制暴露人体实验。
2
The re exposureexperiment also shows that the effect of the aluminum flocculant on the activated sludge in non acute.
二次暴露实验的结果还表明,铝絮凝剂对活性污泥的影响是非急性的。
3
In addition, two methods of verifying exposure data are rendered, and the problems which we should pay attention to during exposureexperiment are also presented.