The influencing factors of coal arch camber in planomural coal bin and coal drop pipe with rectangular or circular cross section during coal drop are studied theoretically.
对落煤过程中平壁煤仓及截面形状分别为矩形、圆形的落煤管起拱的影响因素进行理论研究。
The precipitous drop in coal prices last year as the world economy swooned has delayed some projects.
而去年全球经济衰退造成的煤价暴跌延误了一些工程。
The drop in the amount absorbed is equivalent to 405m tonnes of carbon or around 60 times the annual output of Drax coal-fired power station, which is the largest in the UK.
未被吸收的数量相当于4.05亿吨二氧化碳，或者相当于英国最大的燃煤电厂德拉克斯大约60倍的年排放量。
In China, however, as coal prices drop, the big state-owned electricity generators are benefiting because highly regulated electricity prices have not fallen in tandem.
但是在中国，煤炭价格的下降令大型国有发电厂受益，因为受到严格管制的电力价格并没有随之下降。
Carbon monoxide poisoning in the winter months is common in rural areas of northern China. Local residents sometimes burn coal to keep warm when temperatures drop.
在中国北方农村地区，冬季一氧化碳中毒经常发生。气温下降时，当地居民有时烧煤取暖。
To use the drilled coal core site desorption data can get a drop-down curve of abandoned mine methane emission rate versus time approximately.
用钻孔煤心现场解吸数据可以近似得到废弃矿井甲烷涌出速度对时间的下降曲线。
The char types of the various macerals and their combustion modes were investigated in detail according to the drop tube furnace and one-dimension coal combustibility tests.
本文依据沉降炉和一维煤粉燃烧特性试验，对不同显微组分的残炭类型及其燃烧方式进行了详尽的探讨。
The influence of coal granule size on the emission characteristics of inhalable particles has been studied with a drop tube furnace.
采用沉降炉研究了煤粉粒径对可吸入颗粒物排放特性的影响。
Gas concentrations drop, and the effective gas drainage period of holes is shortened, because pores and cracks in the coal seam become completely developed after gas drainage.
针对煤层钻孔抽放瓦斯后煤层孔隙裂隙发育致使瓦斯浓度下降，钻孔有效抽放期缩短的技术难题，首次提出二次封孔方法。
The article finds that the marginal cost of China's coal industry since 1999 show a downward trend, and after 2002, there are signs of the inflection point of drop-rate slowing down.
发现我国煤炭产业边际成本自1999年以后呈现下降趋势，并在2002年以后下降速率放缓，有出现拐点的迹象。
Experimental investigations into the relationship between the coal concentrations and the ignition hoes in coal clouds are performed in a drop tube furnace.
在管式炉上对煤粉气流着火方式与煤粉浓度的关系进行了研究。
Experimental investigations into the relationship between the coal concentrations and the ignition hoes in coal clouds are performed in a drop tube furnace.
在管式炉上对煤粉气流着火方式与煤粉浓度的关系进行了研究。
应用推荐