engineman' 机车信号机
engineman 火车司机 ; 机匠 ; 机工 ; 司机
third engineman 三管轮
first engineman 大管轮 ; 大管
second engineman 二管轮
train engineman 列车司机
In the crew on board, the incidences of lumbar disorders in the higher height group, the engineman group, and longer service group were higher than those in the other groups.
而且舰船人员身高较高组、轮机专业组、工作年限较长组该三种腰部疾病的发生率较高。
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