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- Also the pyrolysis mechanism of coal residue was analyzed, and the equations of pyrolysis mechanism and parameters of reaction kinetics were obtained. 并对煤矸石的热解机理进行了分析，得到煤矸石的热解机理方程式和反应动力学参数。
- The yield of humic acid of the coal residues increased with the increasing of the photooxidation time, coal residues increased.The order of the yield of humic acid of coal residues is D2>D3>D4. 各煤组分的腐殖酸产率随着光氧化时间的增加而增大，腐殖酸产率依次为D2>D3>D4。
- 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。
- 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？
- A coal fell from the fire and burned the mat. 一块煤炭从火中掉出来，烧坏了地席。
- The country is rich in oil and coal. 这个国家石油和煤的资源丰富。
- The smoldering coal or ash of a dying fire. 余烬将要熄灭的火中的冒着烟的煤块或灰烬
- They were shoveling coal into a cart. 他们在把煤铲进手推车。
- Do we have enough coal in for winter? 家里过冬用的煤够了吗?
- Coal and oil are natural products. 煤和石油是天然物产。
