以巴丹吉林沙漠为主体的中国北部沙漠是我国北方地区两大粉尘源之一。
Chinese northern desert (hereafter CND), with Badain Jaran desert as its main body, is one of the two most important dust sources in northern part of China.
在中国的主要沙漠和戈壁等粉尘源区采集了地表沙或土壤（统称为表土）样品，分析了样品的碳酸盐含量和碳酸盐的碳氧同位素组成。
Surface soil samples were collected in the deserts and Gobi regions of China. The carbonate content and carbon and oxygen isotopic composition were analyzed.
其主要污染源为工业粉尘、烟尘，机动车排放的尾气，建筑施工及道路交通产生的尘污染。
Its main pollution sources were industrial dust, smoke dust, exhaust emission and construction and traffic dust.
复杂地形的管网设计，尘源点的密封装置的设计和选用，移动尘源的粉尘扩散控制以及二次扬尘的控制是整个工程中的重点和难点。
Complex terrain of network design, dust source points sealed design and the choice of devices, mobile sources dust-dust control and grass control are the key link.
采用交流耦合方式传感的污染源粉尘颗粒浓度的智能监测。
Uses alternating current coupling sensor to Intelligent monitor the dust pellet of the source of pollution.
采用WY1型冲击式尘粒分级仪测量各尘源排放粉尘的粉尘粒径分级组成和除尘器的粒径分级除尘效率。
WY 1 in stake Cascade Impacted was used to measure the particle size classification of dusts and the fractional collecting efficiencies of dust collectors.
为了解决机立窑粉尘污染源问题，针对立窑水泥厂除尘这个难题进行了研究。
Machine set up kiln dust pollution primary pollution source of cement plant, to set up this text kiln cement plant dust removal these difficult problem carry on research.
那些常年经历着过敏的人其过敏源可能是来自环境中的粉尘，老鼠，和蟑螂。
People who suffer from year-round hay fever (perennial rhinitis) may be allergic to persistent allergens in the environment coming from such sources as dust mites, mice, and cockroaches.
这种影响是由于粉尘颗粒中位径变化而引起的。发尘源非连续发尘时不但引起粉尘浓度变化，而且引起中位径改变。
The K-Factor correlated linearly with dust concentration, this is due to the variation of dust particle median diameter.
这些问题源头大部分来自粉尘污染源并不足为奇。
Not surprisingly, the majority of dirt seed sources can be traced back directly to this issue.
这些问题源头大部分来自粉尘污染源并不足为奇。
Not surprisingly, the majority of dirt seed sources can be traced back directly to this issue.
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