查询词典 file dust

These samples were collected along a main street across the urban area and a mountain route from foot to the top. Results demonstrate that the main magnetic minerals in the street dust are magnetite, maghaemite and haematite with some paramagnetic minerals. Plots of Mrs/Ms vs. Bcr/Bc and Xfd % vs. X ARM/SIRM indicate that the main grain size of magnetic minerals in the street dust are pseudo single domain. The results reveal that the Lanzhou city is more polluted in spring than in summer. The main pollution sources are anthropogenic activities （81.9%） and natural dust （18.1%）, especially the former. The spatial distribution of pollution is controlled by the topography and weather conditions.

结果表明，兰州市街道尘埃中磁性矿物含量较高，主要磁性矿物是铁磁矿、磁赤铁矿和赤铁矿，并伴有少量顺磁性矿物；磁性矿物粒度主要是准单畴；市区污染春季较夏季严重，春季高频率的强沙尘暴可能带来了更多的磁性矿物；兰州市污染物的沉积和分布在很大程度上受到气象条件和地形地貌格局的影响，市区每个盆地东端高于其它地区；兰州市污染以人为活动产物为主，人为活动贡献约为81.9％，其中包含交通约22.6％的贡献，自然降尘贡献约为18.1％；特殊的地形和气象条件，使得兰州市区的大气环境容量比平原城市的环境容量小得多，进而导致严重的大气污染。

Respirable dust levels above 5mg/m3 and inspirable dust above 10mg/m3 require the use of an approved dust mask.

可吸入灰尘指数超过5mg/m3和可激发灰尘指数超过10mg/m3时应使用经过检验的防尘面具。

I can only regret is that where the air was filled with many of the small dust, which we call the respirable dust, which is leading to dust exposure of workers occurred in the main reason for pneumoconiosis.

可唯一让我遗憾的是，那儿的空气中弥漫着许多细小的粉尘，我们称之为呼吸性粉尘，这是导致接触粉尘工人发生尘肺病的主要原因。

In the paper,the concept of respirable dust and elemental demend of experimental respirable dust were introduced,the production method of respirable dust was studied,and the efficiency was tested and analysed.

文摘：介绍了呼吸性粉尘的概念，试验粉尘的基本要求，研究了试验呼吸性粉尘的制备方法，并对研制的滤料阻尘效果进行了测试分析。

Professional to provide dust and organic waste gas purification treatment equipment and technology solutions, the main purification equipment have VOG type of organic waste gas purification device, ES-C-type cartridge dust collector, ES-Q-type dry-type spray cabinet; the United States imports of various types of sales materials cartridge dust, paint mist filter materials and electrostatic precipitator welding smoke.

专业提供粉尘和有机废气净化处理设备及技术解决方案，主要净化设备有VOG 型有机废气净化装置、ES-C型滤筒除尘器、ES-Q型干式喷漆柜；销售美国进口各类材质除尘滤筒、漆雾过滤材料及静电焊烟除尘器。

of preventing dust deposits in order to prevent reduced boiler efficiency due to adhering dustIf dust deposition is large, wear is not a problem, but dust deposits have a negativeeffect on boiler tube heat transfer.

方法防止灰尘存款，以防止锅炉效率降低，由于坚持尘埃如果尘埃沉积大，磨损是没有问题，但尘埃存款有负面对锅炉管传热。

A cleaner includes a suction motor mounted in a cleaner main body, and generating a suction force; a filter for collecting dust or filth sucked by the suction force generated at the suction motor; a suction head connected with the filter by a suction tube, and sucking dust and filth on a floor; a brush installed in the suction head so as to ascend/descend in a vertical direction, and sweeping dust and foreign substances into the suction head; and a brush height control apparatus installed in the suction head, and making the brush ascend/descend in a vertical direction.

一种吸尘器，它包括安装在吸尘器主体内并且产生吸力的吸尘马达；收集由吸尘马达所产生的吸力吸入的尘土或污物的过滤器；通过吸尘管与过滤器连接的吸尘头，吸尘头吸入地板上的尘土和污物；安装在吸尘头内从而可以在垂直方向上上升/下降的刷子，它将尘土和异物扫入吸尘头；和刷子高度控制设备，它安装在吸尘头中，并且使刷子在垂直方向上上升/下降。

While the morning-band has not beclouded my eyes While the cord of the Fates is still dimly evident In the dusk, I am busy In twining the life in dust Mosquitoes are not tired of reciting doggerels again and again I am immaculate to respectively listen to them Moths are looking for sunshine in sunshine I am not intent to bluntly point it out Time is like starlight Soundlessly trickling from reticulations I only hold the undivided attention To weave the life in dust Oh, when will the silk thread As long as a dream be ended In my bustling steps Where is the unchangeable purpose A gigantic beetle Has destroyed my dream that is as long as the silk thread What has dropped from the sky to the earth also includes The life I am weaving in dust

趁黑纱尚未蒙蔽我的眼睛昏黄中这一线命运的绳索还依稀分明，我要忙着织完这尘埃中的生活蚊子不厌其繁地朗诵打油诗我无暇聆听飞蛾在光明中寻找光明我无心点破时间如星光从网眼里无声地滴漏我只一心一意纺织这尘埃中的生活梦一样长的丝线啊何时才有个尽头在我忙乱的脚步里哪里有不可更改的目的一只巨大的甲壳虫摧毁了我丝线一样长的梦从空中坠落在地的，还有这我正在尘埃中编织的生活

The anion has as follows 8 big benefit: Sterilize surpass the oxygen negative ion free radical but kill various pneogaster infectious disease bacterium; Dust removal makes air middle dust heavy getting together, suspension pellet the brute force is collected; Deodorization dislodges various the peculiar smell living , bad smell , improves a bag; Eliminate cigarette smoke fog , dust in wiping out air rapidly , completely eradicate the second-hand cigarette; The various deleterious chemistry volatilizes a gas , wipes out "the invisible killer " in getting rid of poison dislodging air; Work efficiency, removes health care rise becoming fagged , improve the heart-lung function, strengthen the human body immunocompetence; Improve the looks making an epithelium bring negative charge along , make germs lose the go at ability to the cell , keep skin glossy; Except that static electricity is positive static electricity in general in life, will be physically and mentally healthy to the human body bringing about hidden trouble, the anion has an effect to neutralize this static electricity.

负离子有如下8大好处：杀菌——超氧阴离子自由基可杀灭各种呼吸道传染病菌；除尘——使空气中尘埃聚沉，强力收集悬浮颗粒；除臭——去除各种生活异味、臭味，改善生活环境；消烟——快速消灭空气中的烟雾、尘埃，杜绝二手烟；去毒——去除空气中各种有毒化学挥发气体，消灭&隐形杀手&；保健——提高工效、消除疲劳，改善心肺功能，增强肌体免疫能力；美容——使上皮细胞带负电荷，使病菌失去对细胞的攻击能力，保持皮肤光滑；除静电——生活中一般为正的静电，会对人体身心健康带来隐患，负离子有效中和这种静电。

The text is about working process and control demand for a control system of removing dust electrically. The control system of removing dust made those company who need to obviating dust take the reins of mature technology, and the efficiency, automatic level have a great elevated.

本文介绍电除尘除灰控制系统的工作流程和控制要求，电除尘除灰系统的应用使得国内电厂等需除灰尘的企业掌握了成熟的除尘技术，除尘的效率、工艺水平及自动化水平有了很大提高。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。