结果该厂主要职业危害因素是粉尘和噪声。

Results The main occupational risk factors were dust and noise.

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与主要职业相关的工作（如农场或林场的工作）可视为附带职业。

Work in your own business, e. g. farming or forestry, may be a secondary employment in relation to another occupation which is the primary employment.

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目的了解汽车制造行业存在的主要职业危害和作业工人的健康状况。

Objective to investigate main occupational hazard factors and the health status of workers in an automobile manufacturing corporation.

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