1·Methods The concentration of total dust, respirable dust and the dust dispersivity were measured at same time.
方法对工作场所空气中某种粉尘进行总尘浓度、呼尘浓度、分散度测定。
2·The respirable dust samples were collected on 37 mm cellulose acetate filters (pore size 0.8 mm) placed in a 37 mm conductive plastic cyclone.
呼吸性粉尘的样本收集三七毫米醋酸纤维素过滤器（孔径0.8毫米）放置在一个三十七毫米导电塑料气旋。
3·The laboratory tests and underground application show that this dust suppression technique has remarkable effect on the total dust, especially on the respirable dust.
阐述了全工班个体呼吸性粉尘监测系统性的监测方案、监测过程及效果分析，提出了有针对性的防尘对策。
4·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。
5·The spray system locates different types of sprays spatially to develop three lines of defense to minimize respirable dust emissions in and around continuous miner face areas.
喷雾系统位于分歧类型地喷雾空间开展三道防地，尽量削减呼吸性粉尘地排放量和四周持续采煤机面临地域。
6·Therefore, it is of great importance to conduct the research on wet dust collector and raise its removal efficiency for respirable dust while ensuring its removal efficiency for total dust.
因此，开展湿式除尘器的研究，在保障其总粉尘除尘效率的同时，提高其呼吸性粉尘除尘效率具有重要意义。
7·To explain whole class works individual workers respirable dust monitoring systematic monitoring program, monitoring process and effect analysis, proposed targeted dust-proof countermeasures.
阐述了全工班个体呼吸性粉尘监测系统性的监测方案、监测过程及效果分析，提出了有针对性的防尘对策。
8·Basic principle, experiment condition, operating process, method and steps of X-ray diffraction method to determine free silica content of respirable dust in mines are introduced in this paper.
本文介绍了应用X射线衍射仪测定矿山呼吸性粉尘中游离二氧化硅含量的基本原理、实验条件以及操作过程、方法步骤等。
9·By investigation found that our existing methods of dust spray equipment and the dust is the common problem of dust control efficiency is not high, respirable dust and dust all settlement rate is low.
本文通过调研发现，我国现有的喷雾降尘方法和降尘设备普遍存在的问题是降尘效率不高，呼吸性粉尘和全尘的沉降率低。
10·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。