Pointed out different affects between them,that is,method of testing dust collection efficiency and choice of testing dust,and analysed the difference in detail.
介绍了关于自吸过滤式口罩的两套国家标准,论述了标准中规定的具体内容,指出两套标准在口罩的阻尘效率测试方法和试验粉尘的选取中存在的差异,并对差异进行了分析讨论,从而得出以下结论:测试方法和试验物质也要实现标准化,这样结果才具有可比性,以便用于规范市场。
The purpose,scope of application,and environmental factors in the sand and dust test were introduced.
同时指出了确定试验持续时间的方法,最后对砂尘试验箱(室)提出6点设计要求,为我国自行研制军用砂尘环境试验设备提供了依据,从而提高了我国军用武器装备对环境的适应性及可靠性。
Atmospheric air-Test dust standard sample-Fly ash
GB/T13269-1991大气试验粉尘标准样品煤飞尘
Atmospheric air-Test dust standard sample-Loess dust
GB/T13268-1991大气试验粉尘标准样品黄土尘
Atmospheric air-Test dust standard sample-Simulated atmospheric dust
GB/T13270-1991大气试验粉尘标准样品模拟大气尘
The Test Research of Electrostatic Precipitator Collecting Dust When Using Worse Coal;
电除尘器收集困难煤种粉尘试验研究
Study on effect of the dust characteristics on collection efficiency of the ESP
粉尘性质对电除尘器性能影响的试验研究
Experimental Research of Gas Flow Distribution and Dust Sedimentation;
气流分布与粉尘沉降规律的试验研究
Orthorhombic Experimental Study on Impact Factors of Respirable Dust Removal Efficiency of CSY-180 Hydraulic Dust Collector
CSY-180液动除尘器呼吸性粉尘除尘效率影响因素正交试验研究
Based on statistical analysis, there existed significant differences among the five pharmaceutical products and five factories concerning microbial contamination.
作业室落菌试验显示以易造成粉尘者污染率高。
Experimental Research of Zinc Removal from Dust of EAF in Microwave Field
电炉含锌粉尘在微波场下脱锌的试验研究
The Design and Research of the Fine Particle Sampler without Dynamic;
无动力微细粉尘采样器的设计与试验研究
The Design of Pipeline Experimental Device of Gas and Dust Exploding;
管道式可燃气体—粉尘爆炸试验装置设计
Twelve subjects breathed in a small quantity of magnetite dust, which settled in the lungs and produced a measurable external magnetic field.
12名接受试验的人吸入微量磁铁矿石粉尘，这些粉尘停留在肺内，产生一个可测的磁
The special tests we have done show a strong positive reaction to house dust, pollens, moulds and house mite.
我们做地特殊试验表明您对室内尘土、粉、菌和家螨都有强阳性反应。
MECHANISM AND RESEARCH OF DUST CONTROL DEVICES
涡流控尘装置的控尘机理及试验研究
EXAMINA TION OF DUST SOCK PRINT;
穿袜粉尘足迹检验中的形态变异问题
Acaricidal activity of Cassia extracts against Dermatophagoides farinae
肉桂提取物对粉尘螨杀灭的实验研究
Wind Tunnel Study of Wind Erosion and Dust Flux on Different Surfaces in Dry Ebinur Lake,Xinjiang,China
艾比湖干涸湖底不同地表类型风蚀强度及粉尘输移通量的风洞试验研究
A RESEARCH ON COLLECTION EFFICIENCY OF ESP FOR SINTERING DUST
电除尘器对烧结灰除尘性能影响的试验研究