行车安全与机车乘务员握力的研究叶龙刘士奇沈梅铁路机车乘务员的许多操作都受握力影响。故选择握力作为研究对象，目的在于探讨握力对机车乘务员行车安全的影响。本研究采用了国际通用的抽样技术，即与规模成比例的不等概率抽样法（ＰＰＳ抽样法）来抽样选取测试乘务员。... Study on Driving Safety and Grip Force of Locomotive Engineers Ye Long Liu Shijie Shen Mei Railway Many operations of locomotive flight attendants are affected by the grip power. Therefore, the choice of grip as a research object, the purpose is to explore the impact of grip on the safety of locomotive flight attendants. In this study, a sampling technique was used to select the test flight attendants by using the internationally accepted sampling technique, that is, the unequal probability sampling method proportional to the scale (PPS sampling method). ...