几年来,我们经常给接触粉尘作业的工人进行健康检查。在实际工作中体会到:其中“负荷试验”一项虽然操作容易,但因测知呼吸次数与脉搏次数是在同一时间内进行的,而且大都一连测定三次,故必须两个人负责,这不但浪费人力,其测定结果往往并不满意。所以,如能创造一种便利的工具,一个人操作,又 For several years, we have regularly conducted health checks on workers exposed to dust. In actual work experience: One of the “load test” one although easy to operate, but because of the number of breaths and pulse measurements were conducted at the same time, and most of the determination of three times in a row, it must be responsible for two people, it is not only wasteful Manpower, the measurement results are often not satisfied. So, if we can create a convenient tool, one operates, in turn