When failures occur in optical communications systems, dangerous optical emissions can harm users and maintenance workers.
当故障发生在光通信系统中时，危险的光发射可能伤害用户和维护工作者。
The utility model has the advantages that the roller change time is reduced and the labor intensity of maintenance workers is lessened.
本实用新型的优点在于能够减少换辊时间及减轻检修工人的劳动强度。
The detection can be performed only by filling the hydraulic oil, and the operation can be mastered by most of the maintenance workers.
使用时按标记通入液压油即可检测，一般检修人员都容易掌握，简单方便，省工省时。
The utility model has the advantages of novel structure, multifunction and easy use, and the utility model is an ideal tool for maintenance workers.
本实用新型结构新型、功能多、使用方便、是维修工作人员的理想工具。
Objective To study the dose response relationship between noise exposure and prevalence of noise induced hearing loss(NIHL)in man aircraft maintenance workers.
目的探讨男性飞机维修人员噪声暴露与噪声性听力损失（NIHL）患病率之间的剂量反应关系。
Although these buttons are useless to the average person, they do perform their proper function for fire fighters and maintenance workers but only with a code or designated keys.
尽管这些按键对普通人而言没有作用，但对于使用密码或特定钥匙的消防员或维修人员来说，这些按键能够很好地发挥其作用。
In order for the better use of Cummins engine and the quicker grasp of maintenance technique for maintenance workers, the paper discusses the operation and maintenance points of Cummins engine.
为了使康明斯发动机更好使用，也使维修人员尽快地掌握维修技术，现将康明斯发动机操作及维护保养要点作简要的介绍。
Maintenance workers at the university are straining to remove seats to make way for the TV cameras.
大学的维修工正忙于将座位搬走，好为电视摄像机腾出空间。
Maintenance workers at the university are straining to remove seats to make way for the TV cameras.
大学的维修工正忙于将座位搬走，好为电视摄像机腾出空间。
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