要加强劳动保护，改善作业环境条件，合理安排出乘和休息时间，缓解疲劳的发生。
Labor protection should be reinforced, working environment improved and proper working schedule and resting holidays arranged to ease off engine drivers' tiredness from work.
根据作业环境条件选择130名工人，分为对照组、低浓度接触组和高浓度接触组，同时将25名轻度苯中毒工人列为中毒组。
According to the working environment 130 workers were divided into control group, low con centration group, and high concentration group.
结论在高原特定环境条件的作用下，高原作业人群存在不同程度的心理问题，不同海拔的作业人群其心理适应过程和状况不同。
Conclusions the processes of adaptive psychological reactions were different in workers on plateaus of different altitudes. They had psychological problems of different degree.
结论在高原特定环境条件的作用下，高原作业人群存在不同程度的心理问题，不同海拔的作业人群其心理适应过程和状况不同。
Conclusions the processes of adaptive psychological reactions were different in workers on plateaus of different altitudes. They had psychological problems of different degree.
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