查询词典 covered with dust

During the industrial production operation processing,the human body is the main source of dust in the cleanroom ,the aim of wearing the dustlessness clothing system is to descrease the pollution of dust and prevent the static electricity of the production by human body spontaneously.

在无尘室工业生产操作过程中，人体是洁净室内最大的发尘源，穿戴无尘服装系统目的是最大限度的减少人体的发尘污染和防止人体自发静电的产生。

The finer sizes have lower minimum explosible concentrations and higher explosion intensity. When particle sizes of coal dust are less than 75 μm,minimum explosible concentrations and explosion intensity approach a limiting value. In the concentration range measured ( less than 700 g/m3), maximum explosion pressures, maximum rates of pressure rise and explosion indices increase along with the increase of coal dust concentrations. Explosion intensity rapidly enhances along with ignition energy augmenting. Explosion reaction is weak while ignition energy is less than 1 kJ.

煤粉越细，其爆炸下限越低，爆炸烈度越大，但煤粉细到75 μm以下后，这种变化趋势趋缓；在所测浓度范围内(小于700 g/m3)，最大爆压、最大压力上升速率和爆炸指数均随煤粉浓度增大而增大；爆炸烈度随点火能增大而迅速增强，点火能小于1 kJ时各煤样在不同浓度的爆炸都很微弱。

Regardless to the research development or industrial application, nano metal powders are extensively discussed. Within these powders, the flammable and explosible nano aluminum, titanium and iron powders produce a great amount production and apply widely. Meanwhile, the surface/volume ratio of powders is increased significantly under nano scale, in which to enhance the ignition opportunity. Thus, the dust explosion hazard risk of nano powders could remarkable rise. In addition, the comparison of explosion phenomenon, test methods and quantification parameters between nano and micro scale is necessary to deeply investigate further. So that this project operates the explosion characteristic experiments to measure and determine such the maximum explosion pressure, minimum explosion concentration and explosion characteristic Kst value on above mentioned three nano metal powders. Expectantly, to provide the appropriate recommendations of safety prevention for nano dust explosion based on the experimental results.

奈米金属粉末无论是研究发展或是工业界应用，目前皆是广泛讨论研究之材料，其中，奈米铝粉、奈米钛粉以及奈米铁粉等可燃、爆性粉末，均有高额产量及大量应用领域，与此同时，在粉末粒径进入奈米尺度的情况下，粉尘比表面积大幅提升，增加此三种粉尘可被点燃的机会，因此，潜在的粉尘爆炸危害风险将广幅增加，另外，微米尺度粉尘爆炸的现象、测试方法以及量化参数是否具有相同的实验尺度基点，也需要深入探讨，故本次计画针对上述三种奈米金属粉末，进行三种不同粒径的爆炸特性参数实验，如最大爆炸压力、最低爆炸浓度以及爆炸特性参数Kst值之量测与计算，期能量化其粉尘爆炸特性，并据此提出适当的安全防护建议。

Elaboration time please use suck ash device, D oes not make dust fly loose, Because includes fiberglas, Different from person to person, Sometimes will make skin itch, Besides, If dust will adsorb on machine, Will use precision reduce.

加工时请使用吸灰装置，不要使灰尘飞散，由于含有玻璃纤维，因人而异，有时会使皮肤发痒，此外，若粉尘吸附在机器上，会使用精度降低。

Structure is willing to work rationale : the paper to paper on stage by infrared absorption into the lamp drying wind hield, After Road from the conveyor belt and crushed round brush and brush so that the paper dust from the suction fan sucked out; B-type structures of the A-type unction on the basis of additional wetting a paper on the roll so that the small amount of residue below dust by wetting roll away, except on the following powder to the best results.

型结构工作愿理：纸张在给纸台上通过红外灯管烘干送入吸风罩内，由输送带经过道轮刷辗和排刷使纸张上的粉尘由吸风机吸走；B 型结构是在 A 型功能的基础上增设一道润湿辊使纸张上下面残留的少量粉尘由润湿辊带走，使上下面除粉达最佳效果。

By using the perturbations of infalling null dust and of both outgoing and infallingnull dust in theSitter black hole geometry,respectively,wecheck a conjecture to the Cauchy-horizon stability given by Helliwell and Konkowski.

由于黑洞的柯西视界稳定性与宇宙监督假定有紧密联系，所以它一直是广义相对论中的一个重要研究课题。

Sees only Moon crater which this at the beginning of war rests, from piece of on pale under black light and shade lamination dust, the slowly appearance, under the Moon small gravitation, true completely is being in the clouds quiet down, estimated needs at least for month-long the time, looked like the war the haze also must continue for a long time; Harbors the extremely serious mood, greatly leads several intimate assistants for doctor, passed through the thick dust dense fog, in basically cleans in the battlefield which finished to seek, the human brave warrior's skeleton already properly is processed early, but in the battlefield everywhere all has without enough time cleaning up each kind of weaponry, each kind of components which the guns, the bullet, the portable laser cannon and scatter, mixes with in the every large or small chippings, eliminates this also to have is wrecked innumerably, the kind of person robot makes threatening gestures to maintain each kind of death posture wreckage and the fragment, this gets down quietly the battlefield everywhere is filling the air the death breath, is constraining the people sensitive frail nerveDavid Dr.

只见这座大战初歇的月球环形山，正在从一片上淡下黑明暗分层的尘埃云中，慢慢的显露出来，在月球较小的引力作用下，真正的完全沉寂下来，估计至少需要一个月的时间，看来战争的阴霾还要持续许久；怀着极为沉重的心情，大为博士带领几位亲密的副手，穿过浓厚的尘埃迷雾，在基本打扫完毕的战场上寻找着，人类勇士的尸骸早已经被妥善处理，但是战场上到处都有来不及清理的各种武器装备，枪支、子弹、便携激光炮和散落的各种零件，夹杂在大大小小的碎石块中，除此还有无数被击毁的，类人机器人张牙舞爪保持着各种死亡姿态的残骸和碎片，这个沉寂下来的战场到处弥漫着死亡的气息，压抑着人们敏感脆弱的神经，大卫博士一行人，就这样巡视着并细心察看着这场战争的严重破坏。

In this paper the structure and the working principle of the model Z198 dust remover is introduced , the application and the effect of the dust remover to quick lime nitrify engineering is analysed .

对Z198型布袋除尘器的结构，工作原理等作了介绍，并分析了其在生石灰硝化工程中的应用情况及效果，同时指出了在使用过程中存在的问题。

Algorithm of nonrespirable dust fraction suppression using an optical transducer of dust mass concentration.

基于平均质量的悬浮颗粒物的质量密度算法。光学学报， 2007， 27(9)： 1706～1710

Algorithm of nonrespirable dust fraction suppression using an optical transducer of dust mass concentration.

光学学报， 2007， 27(9)： 1706～1710 顾芳，杨娟，卞保民，贺安之，&粒子计数器测量悬浮颗粒物质量浓度的计算模型&，中国光学快报 6，

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48