the par for selected studies indicated that if the infant population were entirely unexposed to maternal depressive symptoms 23% to 29% fewer children would be underweight or stunted.
研究选定的人群特异危险度(par)表明:如果幼儿群体完全没有暴露在母亲抑郁癥状中,则体重不足或发育不良的儿童可减少23%–29%。
immune functions were detected in 70 workers exposed to chlorobutadiene(cbd) and 30 workers unexposed to any kind of poison(the control group).
检测了70名氯丁二烯(cbd)作业工人和30名非接触毒物人员的细胞免疫、红细胞免疫和体液免疫。
in this experiment, the challenge mites were exposed to a section of the leaf unexposed to initial treatment with mites.
在这个实验中,挑战螨暴露部分未曝光的叶螨的初步治疗。
methods: a total of 289 married male radar operators were included in the radar group and 148 married men unexposed to microwave radiation were enrolled as controls.
方法:研究组选择已婚雷达作业人员289例,对照组选择无电磁辐射影响的已婚官兵148例。