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为了弄清蒸汽机车老乘务员呼吸系统受煤尘影响的程度,我们对蒸汽机车老乘务员的肺通气功能进行了测定。测定方法 1.对象:沈阳铁路分局苏家屯机务段的老乘
In order to understand the steam locomotive veteran respiratory system affected by the degree of dust, we conducted a steam locomotive veteran pulmonary ventilation function were measured. Determination Method 1. Object: Shenyang Railway Branch Sujiatun locomotive depot of the old ride