职业性有害因素（occupational hazards）又称职业病危害因素，是指生产工作过程及其环境中产生和（或）存在的，对职业人群的健康、安全和作业能力可能造成不良影响的一切要素或条件的总称。
噪声是电力行业比较突出、影响较大的职业性有害因素。
The noise hazard is the bigger harmful factor of occupation job grading in Thermal power plant.
结论 ：某些职业性有害因素损害骨关节系统的情况是客观存在的。
On the basis of aforesaid materials, conception of occupational osteoarthropathy was put forward.
生产性粉尘是燃煤火电厂一大职业性有害因素，从原煤进厂到锅炉燃烧、排放的整个过程均有粉尘产生。
Productive dust is an occupational harmful factor of coal-fired thermal power plant. In the whole course from raw coal approaching to boiler burning and discharging the dust has been produced.
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