查询词典 Dust

In the core of the larger spiral structure of NGC 1300, the nucleus shows its own extraordinary and distinct "grand-design" spiral structure that is about 3,300 light-years long. Only galaxies with large-scale bars appear to have these grand-design inner disks — a spiral within a spiral. Models suggest that the gas in a bar can be funneled inwards, and then spiral into the center through the grand-design disk, where it can potentially fuel a central black holes. NGC 1300 is not known to have an active nucleus, however, indicating either that there is no black hole, or that it is not accreting matter.

星系演化除了像两个星系相撞那样的剧烈作用之外，还有自己内部很慢的演化，因为一个星系总会有一些引力不稳定，如上图中的NGC1300，它是一个棒旋星系，这种bar结构导致的引力不完全对称会驱使很多气体和尘埃损失角动量往里面落，我们可以清楚的看到dust lanes，有点像黑洞的吸积，但这个星系是个非活动星系，目前还没有黑洞存在的明确证据，but我相信肯定是有的，没有比在星系中心放一个黑洞再完美不过的事情了，或许这些下落的dust lanes是黑洞发光的开始呢。

Emissions of air pollutants boiler water film with granite dust technology, dust removal rate reached 98%.

锅炉大气污染物排放的水膜除尘技术与花岗岩，除尘率达到98％。

The alocasia used to have only three leaves without any new leaves grew up in more than a year. I irrigated the root with 116 microbial fertilizer in May 5. The new leaves started to show up new leaves in just one week. Look, the leaves with dust are the original leaves, while the new ones are only two months old. I didn't wipe the dust off to show the difference. Don't laugh at me!

我家的滴水观音始终就是三片叶，已经一年多没长新叶子了，5月5号用了116肥灌根，一个星期就开始长新叶子了，你看——我手里的三片挂满灰尘的叶子，就是原来的，那几片新叶子就是灌了116肥两个月后新长出来的，为了能看出区别我就没擦这些灰，让你见笑了！

The product enjoys unique electrostatic precipitation design, and can achieve high efficient catching of dust, pollen, mold, dust mite, anaphylactogen and smoke in the air, with evident purification effects.

能快速、有效的电解空气中的烟尘等，瞬间去除屋内异味、烟臭味、室内污染空气迅速转化成新鲜清净的空气，尤其适合会议室、卧室内去除烟尘。

Product specifications complete the Company, the main production and processing: cap gaskets, rubber matting, EVA foot pad, flannel, velvet paper, non-woven, non-slip material, sponge EVA stent, EPE packing materials, silica gel pad, sponge tape, sponge, the sponge tube, magic with, PVC signs, Epoxy, trademark stickers, sound-absorbing cotton, cotton insulation, glass wool, miscellaneous cotton, hot toys and luggage accessories, insulation dust-proof material , fast buses, activated carbon, PVC, such as kapok,, EPDM, CR, POPON jai special plastic, dust-proof materials, speakers pressure, PET, PVC, faster bus meson, rubber cushion, shock-proof material, dust-proof materials, fire insulation, conductive material, such as the four packaging products, products are widely sold throughout the country and Southeast Asia are widely used in electronics, electrical appliances, watches and clocks, lamps, jewelry, metal, plastics, handicrafts, toys, furniture, sports equipment and other industries.

本公司产品规格齐全，主要生产加工：瓶盖垫片、橡胶脚垫、EVA脚垫、绒布、绒纸、无纺布、防滑材料、、海棉EVA支架、EPE包装材料、硅胶垫、海棉胶条、海棉条、海棉管、魔术帖、PVC标牌、滴胶、商标贴纸、吸音棉、隔音棉、玻璃棉、杂棉、热压玩具及箱包配件、绝缘防尘材料、快巴、活性碳、PVC木棉等、、EPDM、CR、POPON特种回力胶、防尘材料、喇叭压、PET、PVC、快巴介子、橡胶垫、防震材料，防尘材料，防火绝缘，导电材料等四大包装系列产品，产品遍销全国各地及东南亚地区广泛应用于电子、电器、钟表、灯饰、首饰、五金、塑胶、工艺品、玩具、家具、运动器材等行业。

From the beginning of the 1980's the visibility dramatically deteriorated,obviously increasing haze weather,in which there are three big fluctuations,respectively showing the periods of pollutions of dust,sulphate and dust,fine particle from photochemical process and sulphate and dust accompanying the developmen...

自1980年代初开始，该地区的能见度急剧恶化，灰霾天气显著增加，其中有3次大的波动，分别代表广州地区经济发展相伴随的粉尘污染、硫酸盐加粉尘污染、光化学过程的细粒子加硫酸盐加粉尘的复合污染时期。

Through an analysis on mud-clogging mechanism of suction nozzles on wet type sweeper, a concept is suggested, that water ratio in dust nearing the wall of suction nozzle duct should be decreased so the mud stickiness can be controlled under a critical value and not sticking to the duct wall whereas water ratio in central dust passage of the duct is properly increased to satisfy effective dust absorbing. On the basis of the concept, a water spraying device is designed with improvement for suction nozzles. In the device, the water hole numbers, diameters and distribution along the nozzle circumference as well as initial direction of water spraying are all determined according to concrete suction nozzle structures.

通过对湿扫型道路清扫车的吸嘴易被泥土堵塞的机理分析，提出降低吸嘴流道近壁的尘土的含水率，控制泥块的黏性处于临界黏性以下，使泥块不黏附于流道壁面；而将吸嘴流道中心部位的尘土的含水率适当加大，以满足有效压尘的解决思路，并根据这种思路改进设计了一种吸嘴喷水装置，按不同吸嘴的具体结构确定孔数、孔径、孔沿圆周的分布规律和喷水的初始方向等要素。

From water to silt to various kinds of dust particles, wam also has abundant experience to offer the most suitable speed of transport and special lubrication and seal installation. as the world-famous dust and particle equipment manufacturers, wam group has the output of more than 25000 screw conveyer, this make it become the dust particle technological authority and one of the biggest equipment supplier in the world; wam was entered and stationed in china through the hong kong agent in 1996, established wam bulk handling machinery co., ltd. in 2000, established the wam bulk handling machinery international trading co., ltd.(all selling operation in china of the products are charged by this company) in 2002, meanwhile, wam has other co-partnership companies in china.

从水到淤泥到各种粉尘颗粒，wam都有丰富的经验提供最合适的输送速度及特殊的润滑和密封装置。wam集团每年25000多台螺旋输送机的生产量使其成为世界上粉尘颗粒螺旋输送的技术权威和最大的设备供应商之一。1996年wam通过香港代理商进驻中国， 2000年成立了全资子公司威埃姆输送机械有限公司、2002年成立了威埃姆输送机械国际贸易有限公司（由该公司负责威埃姆集团的产品在中国的全部销售业务），同时，wam在中国还拥有其他合资公司。

An introduction was made to the dry distillation process of coal, anti-metal penetration mechanism of coal dust and influences of various physical-chemical properties of coal dust on its anti-metal penetration ability, view points on coal dust choice and choice methods.

介绍煤的干馏过程、煤粉在型砂中的防粘砂机理和煤粉的各项理化指标对其防粘砂能力的影响，以及选择优质煤粉的观点和方法。

An introduction was made to the dry distillation process of coal, anti-metal penetration mechanism of coal dust and influences of various physical-chemical properties of coal dust on its anti-metal penetration ability, view points on coal dust choice and choice methods.

摘要介绍煤的干馏过程、煤粉在型砂中的防粘砂机理和煤粉的各项理化指标对其防粘砂能力的影响，以及选择优质煤粉的观点和方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐