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- Research shows that maceral and the degree of metamorphism of coal rock are key factors that control the generating and storing capacity of coal rock. 煤岩组分和煤变质程度是影响煤层生储气能力的主控因素。
- There is a complete metamorphic series of coal from lignite to meager coal in Wumuchang area,Yimin,the main metamorphism type is contact metamorphism of coal. 伊敏五牧场区存在着从褐煤到贫煤完整的变质系列,其主要煤变质类型为接触变质。
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- The country is short of known deposits of coal. 这个国家缺少已知的煤矿矿床。
- An inexhaustible supply of coal. 用之不竭的煤炭供应
- China has a wealth of coal, iron and other minerals. 中国有丰富的煤、铁和其它矿产资源。
- Graphite deposit of Heye was formed by metamorphism of the Permian coal bed. 荷叶石墨矿是由二叠系煤层变质而成的石墨矿床,石墨与煤呈同层异矿关系。
- A Research on the Relationship between the Metamorphism of Coal and Tectonic Structures in Central-South Hunan Province 湘中南地区煤变质与地质构造关系的研究
- The oven holds sufficient heat to fire up a fresh charge of coal. 炉里有足够的热量使新加进的煤燃烧起来。
- A rock formed from the metamorphism of quartz sandstone. 石英岩一种由石英沙岩的变质作用而形成的岩石
- We are talking about the ignitability of coal. 我们在谈论有关煤炭之可燃性。
- The uses of coal are by no means limited to those. 煤的用途何止那一些。
- This seam of coal reposes on a layer of clay. 这个煤层处于一层黏土岩之上。
- Our stock of coal has not renewed yet. 我们的煤炭储存量还没有补充过。
- They use half a ton of coal every week. 他们每周消耗半吨煤。
- The yearly output of coal was quartered in a year. 煤炭年产量一年中减少到原来的四分之一。
- Most large steamships now burn oil instead of coal. 现在多数的大轮船都烧油而不烧煤。
