大多数时候，人们谁高原列车撞倒，因为人们很少改变他们的训练变量随著时间的推移。
Most of the time , people who train hit plateaus because people rarely change their training variables over time.
结论受调查高原旅客列车的空气质量的部分指标未能达到卫生标准和部分旅客主观舒适度欠佳。
Conclusion Some indicators of air quality in the plateau train failed to meet health standards and part passengers has unpleasant subjective comfort.
目的调查高原铁路旅客列车乘务人员睡眠状况，并对其相关因素进行分析，以提出合理措施保障乘务员身体健康。
Objective: To study the sleep state and relative factors of trainman on Qinghai-Tibet railway passenger train and to protect trainmans health by presenting reasonable measures.
应用推荐