肺活量是反映人体呼吸运动机能的一个灵敏指标。观测肺活量的变化,不仅能够评价体育锻炼对儿童呼吸机能发育的作用,而且可以作为评价大气污染对儿童机体影响的指标之一。据报告,中等技校参加石油加工劳动的学生,其肺活量和呼吸差都明显低于对照组;和 Vital capacity is a sensitive indicator of respiratory function. Observing changes in vital capacity can not only evaluate the effect of physical exercise on the development of respiratory function in children, but also can be used as an index to evaluate the impact of air pollution on children’s body. According to the report, students who participated in petroleum processing work in secondary technical schools had significantly lower vital capacity and respiratory rate than those in the control group; and