查询词典 dust-ball

Visible above are red glowing emission nebulas of hydrogen, blue reflection nebulas of dust, dark absorption nebulas of dust, and the stars that formed from them.

上图所见，红色的部份是高温由氢组成的发射星云、蓝色的部份是尘埃造成的反射星云、而黑色的部份是尘埃所产生的吸收星云，恒星便是从中诞生。

Using Field single ignition experiments of the four unconfined volume dispersion and small dosage solid FAE and TNT bombs experiments, we got the peak overpressures of solid FAE at different distances. Compared with TNT, The overpressure of FAE is 1.14~1.6 times higher than that of the TNT. Based on the theory of the air shock wave overpressure, the FAE relativity TNT mass is evaluated. At the edge of the explosive field, the number is 3.88. Pictures of high speed photography indicate that the duration and the most effect area of the FAE and TNT. Compared with TNT, obviously the FAE has more advantages. And, based on the theory of the critical concentration of dust explosion, the radius of dust explosive zone is evaluated. The phenomenon that the overpressure decays rapidly with distance is analyzed. It is suggested that the explosive temperature should be increased as the main approach to improve the FAE explosive capability in the condition when the over pressure is invariable.

通过四组无约束固态燃料空气炸药装置与等质量的TNT在野外开放空间的一次起爆对比实验，测得了不同配方组份FAE装置在不同距离的爆炸超压分布，FAE装置峰值超压比相同距离的TNT高1.14-1.6倍；并运用空气冲击波峰值超压公式计算出了FAE的等效爆炸TNT当量随距离的变化关系，在爆炸场边缘区，FAE装置爆炸当量达到了3.88倍TNT当量；通过高速摄影的图片得到了爆炸产生火球的持续时间和最大作用范围，与等质量TNT爆炸火球相比，FAE的优势明显；运用粉尘爆炸下极限浓度估算了云雾爆轰区半径，并分析了测量到的固态FAE爆炸场的压力分布单调衰减的原因；建议在保持超压不变的情况下，把提高爆温作为提高FAE爆炸性能的主要途径。

On the basis of the mechanism of dust collection by fog-drop and the theory of turbulance pulsation,an industrial test was made on the effect of a wet vibrating fibre-grid dust-removing and cleaning device.

根据雾滴捕尘原理和紊流脉动理论，对湿式振动纤维栅除尘净化装置的效果进行了工业试验。

The source of the dust is the vast loess (wind-laid dust) sheet of Inner Mongolia that stretches west from Beijing 1400 km to the Sinkiang border.

砂塵的來源是北京以西延伸1400公里到新疆邊界的內蒙古巨大黃土層。

Ventilate computer rooms regularly. Install ventilating fan or air conditioner to mitigate the effect of polybrominated dibenzofuran on the body. The dust density around computers is hundreds of times higher than other spaces in the computer room. The dust long adheres to the skin and thus causes various skin diseases.

电脑房间要经常通风，在室内安装换气扇或空调，减轻溴比二苯呋喃对身体的影响，计算机附近的灰尘密度要比机房其它空间高出上百倍，它们长时间附着于人的皮肤上，可导致各类皮肤病。

This disease may be confused with ich by the novice, but the fish with velvet appears as if it is sprinkled with gold dust; hence the common name of gold dust disease.

&这种疾病可能会混淆与脑出血由新手，但鱼与天鹅绒似乎如果是洒黄金粉尘；因此，共同的名字&金尘病。

Advantages of the portable sand-dust separation device are: structure is simple, operation is convenient, sediment of sand and removal of dust can be completed during sand absorption works, work efficiency and effect for the gas absorption type boring tree planter can be increased.

本便携式沙尘分离装置结构简单、合理，操作方便，可在吸沙作业中完成沙子的沉降和除尘，提高气吸式成孔植树机作业效率和作业效果。

The EFs of trace elements were lowest in spring, probably due to frequent dust storms resulting in reduced contribution of anthropogenic sources and increased contribution of soil dust.

微量元素的富集因子在春季最低，反映了频繁发生的沙尘天气的影响。

Results The main occupational risk factors that existed in the tobacco plant were noise,dust,high temperature and chemical poisons.Monitoring results of analogy projects showed noise intensities were 74.9-92.4 dB,exceeding rate was 47.5%.The concentrations of dust,carbon dioxide and alcohol were 0.2-1.7,953-2 128,5.4-21.5 mg/m3,respectively,which were below occupational exposure limits.

结果该建设项目存在的职业病危害因素有噪声、粉尘、高温、化学毒物等，类比工程各种职业病危害因素的检测结果为：噪声强度为74.9~92.4 dB，超标率47.5%；烟草尘浓度为0.2~1.7 mg/m3，超标率为0%；作业场所生产性热源的综合温度为30.8~36.5℃，均为高温作业点。

Lead * Welding Fumes * Silica * Coal dust * Wood/Paper * Concrete/Cement * Cadmium * Nuisance Dusts * Chromate * Toxic Soil Remediation * Tobacco smoke * Construction Dust * Dry Chemical * Oil Mists * Grinding Dusts * Pharmaceuticals * Spray Paint * Grain Features The Air Aide Airborne particulate monitor has a multitude of features the list could go on forever, but for now we will just name a few.

铅 *焊接烟气*硅胶*煤粉尘*木材/纸*混凝土/水泥*镉*无害粉尘*铬*有毒土壤*烟草烟雾*工程粉尘*干化学*油雾*磨削粉尘*制药*喷漆*粮食特征空气悬浮物颗粒监测仪具有多种功能，现在仅举几例。

James, son of Zebedee, and John the brother of James, whom he named Boanerges, that is, sons of thunder

载伯德的儿子雅各伯和雅各伯的弟弟若望，并为他们起名叫"波纳尔革"，就是"雷霆之子"

The southern Hungarian university city of Szeged will host part of the project, amounting to 40 percent of the total investment, which will mostly be paid for through Hungary's EU structural funds.

位于塞格德南部的匈牙利大学将负责部分项目，总计占总投入资金的40%。大部分资金将由匈牙利的欧盟结构基金会支付。