英语语法分析

Health standard for respirable silica dust in the air of workplace.

车间空气中呼吸性矽尘卫生标准。

Examples where lower limit values have recently been proposed include wood dust, respirable silica, and beryllium.

例如木材灰、可呼吸性二氧化矽和铍为最近被提出具较低阈值的例子。

Objective to study the method to classify respirable dust harmfulness degree in geological exploration profession so as to provide scientific basis for its management.

目的探讨地质勘探行业呼吸性粉尘危害程度分级技术标准的制订方法，为粉尘危害分级管理提供科学依据。