The occupational exposure limits (OELs) of wood dust in different countries are however not the same.

不同国家的木粉尘的职业接触极限值（或极限值）却不尽相同。

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The occupational exposure limits (OELs) of wood dust in different countries are however not the same.

不同国家的木粉尘的职业接触极限值（或极限值）却不尽相同。

youdao