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- Special when coal extracts, many dissociate often is contained in ledge 2 oxidation silicon, can be as high as 40 % sometimes. 特别在煤炭开采时，矿层中往往含有大量的游离二氧化硅，有时可高达40%25。
- The results show that there is bigger influence of coal extraction on caking property. 结果表明,煤的抽提率对粘结性有较大的影响。
- Our factory is located in E'nan is Chongyang joint-stock joint venture, professional to stone coal extraction of vanadium pentoxide. 我厂地处鄂南，是崇阳联合股份共同投资，专业以石煤提炼五氧化二钒。
- In the meantime, the data of geodetic measurement, geological investigation and test are also analyzed, and the analytic results show that the local motion of Fushun segment on Hunhe fault is caused by coal extraction. 同时，对大地测量结果、地质勘察及试验结果进行了讨论，结果表明：煤田开采诱发了浑河断裂抚顺段的局部活动。
- During mine development and coal extraction, it is unavoidable to approach and disclose or touch the aquifers (water body).Mine water flood has been one of the biggest hidden troubles of accidents. 摘要在井巷开拓和煤层的回采过程中，不可避免地要接近、揭露或波及破坏某些含水层（体），矿井水害是威胁矿井安全生产最大的事故隐患之一。
- According to the complex condition of deep excavation in Xinji Mine, FLAC program was carried out for strata movement and surface displacement due to coal extraction by different mining layouts. 摘要针对新集三矿急倾斜煤层开采复杂的采矿地质条件，运用求解非线性大变形问题有限差分法(FLAC)，对不同开采方案所引起的岩体移动和地表沉陷进行了研究；
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- 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。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We have enough coal to see the winter out. 我们有足够的煤过冬。
- They eked out their coal by collecting firewood. 他们拣拾木柴以补充煤的不足。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- Keywords Polynuclear aromatic sulfur-heterocycles;coal extract;GC/MS; 煤抽出物;含硫多环芳香化合物;GC／MS;结构鉴定;
- They extract ten million tons of coal each year from underwater mines. 他们每年从水下煤矿中采掘一千万吨煤。
- Pile on more coal the fire is going out. 火快灭了，再加上些煤。
- What can we do with the bituminous coal? 这些烟煤可以用来做什么？
