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- open - air dust source 开放性尘源
- Purifing air, removes in the unusual smell and the fetid odor, absorb and clean air dust, the pollen, tiny bacterium sporangium, the germ and so on. 净化空气、去除余味及臭味、吸收、清洁空气中的尘埃、花粉、微菌芽孢、病菌等。
- Personal exposure concentration of air dust and air boron and boron exposure to workers in boron mining and processing plant and control group were reported. 报告了硼作业工人与对照人群的个人空气粉尘暴露浓度、空气硼暴露浓度以及通过空气的日硼暴露量。
- The paper analyzes dust source and pollution actuality and brings forward prevention and cure countermeasure to different dust source. 分析了乌鲁木齐市扬尘的来源及污染现状,并针对不同扬尘源提出污染防治对策建议。
- Analytical results demonstrate that atmospheric particulates come mainly from concrete industry and traffic, and partly from air dust and soot of industrial stoves in Hefei City. 综合分析结果揭示合肥地区大气颗粒物主要源水泥工业和交通造成的污染，部分来源于地面扬尘和工业窑炉。
- The cement mill main dust source;s dust-concentration and net filtering wind velocity of the pulse spay-blow bag dust-precipitator suggestiong value. 水泥厂主要尘源点的含尘浓度和脉冲喷吹袋式除尘器的净过滤风速建议值。
- Moreover, the Angstrom exponent tends to be lower, indicating that the ratio of larger particles increased. So it is necessary to enhance the dust source harnessing. 而春季气溶胶光学厚度则在近2年有明显增加;源自沙尘天气;且Angstrom指数亦变小;表明大粒子比例增加;因此需要加强对沙尘源的治理.
- The arid and/or semiarid region in the middle and west parts of the Tibetan Plateau may be a potential dust source for the aeolian deposit of the northeastern Tibetan Plateau. 位于高原季风与东亚季风交汇区的湟水流域风尘堆积物可能有一部分来源于青藏高原中-西部干旱地区的风化细粒物质。
- Built on district difference of the area, the distribution character of elements of the air dust near the ground in different physiognomy cells, districts and their city zones is researched. 并且结合成都经济区的区域特点，分别对成都经济区内不同地貌单元、不同行政地区及其城区的近地表大气尘元素分布特征进行了研究。
- Analyzing the treatment of different dust sources and bringing forward treatment measure, accordingly the concentration of exhausted and position dust is decreased effectively during the open bauxite mine producing. 针对各产尘源的治理进行了分步分析,提出了治理措施,从而有效降低了铝土露天矿山生产过程中外排及岗位粉尘浓度。
- The fresh air blew in from the open window. 新鲜空气从开着的窗户吹进来。
- Please open a window to allow the air to circulate. 打开窗子让空气流通。
- air dust near the ground surface 近地表大气尘
- In the case of the guniting doublescraper, usually with air dusting and electrostatic powder. 不离喷粉安装而言，凡是有气流喷粉和静电喷粉两栽。
- Open the air hole; the fire is dying down. 把气孔打开，火要熄了。
- Sublevel Mechanized caving method shows the characteristics of high out-put,more dust sources,high dust concentration and difficult to control. 煤矿综采放顶煤工作面开采强度大、产尘尘源多、粉尘浓度高，因而对尘毒的治理难度大。
- Dust source control of belt transporter 皮带运输机的粉尘源控制
- Open the window and let in some fresh air. 打开窗户，让新鲜的空气进来。
- However, 70 X 104 km2 of grassland became sources of sand dust because of soil wind erosion, which account for 30.4% of all sand dust sources, and 38% of all grassland in China. 但有近75万km~2的草地发生风力侵蚀并为沙尘暴提供物质来源，占总物质来源地的30.;4%25，占全国草地面积的38%25。
- Pea pods burst open when overripe. 豌豆过熟就会爆裂。
