Aim to determine the main source of dust pollution in the air in Shang Lan Area, to tackle the problem directly.
目的确定上兰地区空气中尘污染的主要来源，便于针对性治理。
Traffic on roads, even when they are complete paved, is also a major source of dust, smoke, and aerosol emissions.
道路上的交通，甚至当道路是完全铺盖的情况下，也是灰尘、烟和悬浮质的主要排放源。
Through this method we can know clearly the particle's diameter of source of dust and its characteristic of shape...
此方法能清楚地了解尘源样的粒径及行貌特征。
Caption: Mali, 2001. A tree weathers a sandstorm. The Sahara desert is a key source of dust storms, particularly in the area covering Mauritania, Mali, and Algeria.
描述：2001年，马里，一棵挨过了一场沙尘暴的树。撒哈拉沙漠，特别是毛里塔尼亚、马里以及阿尔及利亚地区，是沙尘暴的主要来源。
Source of dust removal equipment Botou paid to the abundant strength, reasonable prices, excellent service and a number of enterprises established long-term cooperative relationship.
泊头市薪源除尘设备有限公司以雄厚的实力、合理的价格、优良的服务与多家企业建立了长期的合作关系。
The purpose of researches on urban dust is focused on the source of dust material, composition of dust, distribution, migration and evolution, pollution effects and prevention and cure.
研究城市灰尘的目的是研究其物质来源、物质成分、分布规律、迁移演化、污染效应、防治治理等。
Dust is a major source of iron, which is vital for plankton and other organisms that draw carbon out of the atmosphere.
灰尘是铁的主要来源。而铁对于浮游生物和有机物来释放二氧化碳是至关重要的。
Of course, solar activity is just one natural source of climate variability. Volcanic eruptions are another, spewing gas and dust into the atmosphere.
当然，太阳活动仅仅是气候变化的一个自然因素，火山喷发出气体和尘埃进入大气层也会带来这个结果。
Suspecting that it might be the source of primordial dust, she recruited a space telescope called Spitzer to look at a quasar called PG 2112 + 059 in more detail.
Markwick - Kemper博士将名为PG 2112 + 059的类星体假想成早期尘埃的来源，启用了太空望远镜——斯匹策红(Spitzer)对其进行了更为细致的观察。
They then linked each sample with its likely source region and calculated the rate of dust deposition over time.
之后研究人员通过沙尘样本找寻到其对应来源地，并计算这些沙尘随时间积聚的速率。
"Particles of dust and smoke are practically transparent in the microwave range, but the radiation is still strong enough for the source of a fire to be detected," said team leader Nora von Wahl.
“灰尘和烟雾的颗粒实际上在微波范围内是透明的，但辐射仍然很强，足以被检测到火源，”研究组长Nora von Wahl说。
The comparison between the analysis results of the loess samples and the dust aerosol samples shows that this experiment method is very good to do dust source and sand dust storm researches.
黄土样品的分析结果与粉尘气溶胶样品的离子分析结果对比表明，此方法对于探讨粉尘起源以及沙尘暴天气的研究具有重要意义。
The main pollution source of the hydrargyrum of vegetable and soil is the atmosphere dust of factory and gas in the Harbin's greenbelt.
哈尔滨市绿地土壤和植物的汞污染主要来源是工厂和交通尾气的大气降尘。
The second fugitive dust about vehicle is an important source of air pollution in northern city of China, the measure and calculation methods need to be developed and researched.
机动车行驶过程二次扬尘已成为中国北方城市扬尘污染的重要来源，有关机动车二次扬尘量化计算亟待研究开发。
The article analyzed the spatial distribution features and regularity of fugitive dust source in Shanghai urban district by using remote sensing images.
利用遥感影像资料，分析了上海市扬尘污染源的空间分布特征与规律，并计算了上海市主要扬尘源的起尘量。
Researchers also plan to look for other quasars dust around the track to further prove their discovery, they think, may also quasars early universe is not the only source of the dust.
研究人员还计划在其他类星体周围寻找尘埃的踪迹以进一步证明他们的发现，他们认为，也有可能类星体并不是早期宇宙唯一的尘埃来源。
The combustible composition implies the volatile and fixed carbon, which is the source of generating heat. The incombustible part contains water and dust, etc.
可燃成分是指煤中的挥发分和固定碳，它们是产生热量的来源，而其中不可燃成分为灰分和水分等。
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.
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。
Uses alternating current coupling sensor to Intelligent monitor the dust pellet of the source of pollution.
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。
The analysis indicates that the transporting force of sand-storm activity and matter in sand dust source area are the decisive factors of sand storm activity.
分析表明，沙尘暴活动的搬运动力和沙尘来源区物质所处状态是沙尘暴活动与否的决定因素。
It introduces the risk, monitor, analytical method, classification, source and prevention of the dust particles during the car body painting.
介绍了车身涂装过程中灰粒的危害、监测、分析方法、分类、来源及防治方法。
Recent studies have shown household dust to be a source of highly diverse and abundant bacteria, yet it remains largely unexplored.
近期研究表明家居灰尘中富含大量不同种类的细菌，还有很多尚没有被发现。
The increase in population and then land pressure caused land desertification, this zone had changed into main source place of dust storm.
随着人口不断增长，土地压力逐渐增大，造成土地荒漠化严重，成为沙尘暴发生的主要沙源地区之一。
The largest dust source in clean rooms is operator, and air shower room is setup before operator enters into clean rooms to remove the dust on the surface of clothes.
洁净室内，最大的尘源是操作者，在操作者进入洁净室之前设备风淋室，以除去衣物表面尘埃。
Like fog around a street lamp, a reflection nebula shines only because the light from an embedded source illuminates its dust; the nebula does not emit any visible light of its own.
就像路灯周围的雾，一个反射星云的发光仅仅是因为嵌入其中的一个光源照亮了他的尘埃，星云本身并不发出任何可见光。
The special topography, climate conditions and the underlying surface with the source of the abundant sand were the material base of forming sand and dust storm.
特殊地形、气候条件和富含沙尘源的下垫面是形成沙尘暴的物质基础；
The special topography, climate conditions and the underlying surface with the source of the abundant sand were the material base of forming sand and dust storm.
特殊地形、气候条件和富含沙尘源的下垫面是形成沙尘暴的物质基础；
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