您要查找的是不是：
- dull brown coal 暗褐煤
- Culm sheath base and margins with sparse, stiff, dull brown hairs. 有稀少，硬，愚笨棕色的头发的竿箨基地和边。
- The colors of pottery from the Warring States Periods were grey, red, dull brown or black. 从战国时期起,陶器的颜色开始出现灰、红、淡棕色或黑色。
- Cloth of a light dull brown or grayish brown or unbleached natural color, especially a heavy woolen or cotton fabric. 本色布，褐色布，灰褐色布：褐色布或灰褐色布或未经漂白的本色布，尤指厚的羊毛或棉织品
- Murky water, hazy sky and dull brown riverbanks.Strained eyes peering into the mist.Ears tuned electronically into the depths. 四周是黑糊糊的水面，昏暗的天空和灰褐色的河堤，搜索队队员们紧张地盯着薄雾，耳朵上带着电子检测器。
- Leaf blade ovate or broadly ovate, papery, abaxially densely white tomentulose, obscurely reddish glandular-scaly, adaxially dull brown when dry, scattered stellate-pilosulose. 叶片卵形或宽卵形，纸质，背面密被白色微绒毛，具不清楚带红色具腺鳞片，干燥时正面黯淡棕色，具星散星状小柔毛。
- This method and systems are also used for other volatile-rich fuels such as brown coal and bituminous coal. 此实验方法和装置,同样适用于研究褐煤、烟煤等高挥发分燃料的输送特性。
- And modified lignite, sulphonated tannin, acid wood, resin, such as brown coal processing agent used to better effect. 与改性褐煤、磺化栲胶、木质酸类、褐煤树脂等处理剂配合使用效果更佳。
- DESC; Pit Coal was much more high graded than Brown Coal and at this point new techniques made refining Pit Coal much simpler. 沥青煤比褐煤等级更高,而此时生产沥青煤的工艺更为简单。
- Gas sourse rock that form gas almost are deep grey, grey black and black mudrock, siltstone and brown coal in Quaternary. 气源主要来自第四系深灰、灰黑及黑色泥质岩和褐煤层,源岩有机质丰度高。
- The transfer ratio of 137Cs from soil to plant cut down a little by the application of plant ash, brown coal but the effect is not stable. 草木灰、褐煤、石灰都有降低~(137)Cs从土壤-植物的转移率的作用,但效果不够稳定。
- German reunification in 1990 saddled the country with East Germany's low-grade brown coal plants, the dirtiest in Europe. 1990年德国统一，东德很多使用粗煤的低级工厂并入了西德，这是全欧洲最脏的工厂。
- Combimed with organic petrological study, it was beieved that hydrocarbons in oil sands come mainly from the brown coal. 结合有机岩石学研究成果，作者认为油砂中的烃类大部分就是源于这种褐煤。
- Preparation of carbon molecular sieves(CMS)from brown coal by two-step carbonization method(TSC)has been investigated in this work. 本文针对高挥发分的褐煤原料，提出两步炭化法制炭分子筛概念，并考察了工艺条件和产品空分性能。
- We obtained humic acid sodium which moulded lignite semi-coke used in ferroalloy plan from brown coal riching in Yunnan province. 利用云南丰富的褐煤资源制备了腐植酸钠作黏结剂,并用来成型铁合金厂应用的褐煤半焦。
- The extraction process producing nitro-humic acid by oxidizing brown coal obtained from Luoci was selected, and the production quality was analyzed. 采用云南罗茨褐煤进行催化氧化,由氧化褐煤制备硝基腐植酸,对制备工艺进行了考察,并对产品质量进行分析。
- Huolinhe brown coal is combusted in one-dimensional furnace to investigate the effective way for restraining and reducing NOX discharge. 在一维燃烧试验炉上燃用霍林河褐煤，考察抑制和降低NOX排放量的有效途径。
- Brown coal A low-grade coal which commonly retains the structures of the original wood. It is high in moisture, low in heat value and checks badly upon drying. 褐煤一种低质煤,往往保存着原来的木质结构,高水分,低热值,干燥后龟裂严重。
- The pyrolysis,ignition and burnout characteristics and activation energy of thr ee kinds of brown coal and their blends were studied by thermogravimetric analy sis. 利用热重分析法对三种褐煤及其混煤的热解、着火和燃尽等燃烧特性及其活化能进行了研究。
- The dull play seemed to last an eternity. 这场乏味的剧似乎演个没完没了。
