论文部分内容阅读
为了探讨铅对学生健康的影响,本文根据学生接铅机会的多少按配对原则选择了某蓄电池厂子校(空气铅浓度为0.0017mg/M~3)其父亲或母亲一方接触铅者为实验一组,同环境父母均未接触铅组
In order to explore the impact of lead on students’ health, this paper selects a battery factory (air lead concentration of 0.0017mg / M ~ 3) according to how many students take the chance of lead according to the principle of pairing. The father or mother contacted lead as experimental group , No contact with environmental parents lead group