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- In the middle stage of coal metamorphism increase of the confining pressure will increase to a certain extent the strength of coal. 在中煤级阶段，虽然围压的增大可在一定程度上提高煤的强度，但温度的影响更为重要。
- This is a model of telemagmatic metamorphism and a character of coal metamorphism early-middle Jurassic in northwest of China. 属于区域岩浆热变质作用的一种模式，也是西北地区早中侏罗世煤变质的特点之一。
- Reported the characteristics and evolution of coal metamorphism in Shuanghua coalfield,specially calculated paleo temperature,determined the coking coal is the magmatically metamorphosed coal. 论述了双桦煤田煤变质特征及其演化，分析了影响煤变质的主要因素，估算了古地温，确认岩浆热变质是形成焦煤的主要作用形式，为在该煤田寻找焦煤指出了方向。
- The research shows that the thermal expansion and fragmentation of coal particles mainly occur in the stage of devolatilization during the coal combustion. 研究表明，煤颗粒在燃烧过程中其热膨胀破碎主要发生在挥发分析出阶段；
- She did the first stage of the trip by train. 她行程的第一段是乘火车的。
- 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 quitted the stage of politics. 他退出了政治舞台。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- They set out on the last stage of their journey. 他们开始了旅行的最后一程。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- Regardless of the different sizes of coal particles, they all tended to break at the stage of devolatilization.It was even easier for coal particles to break if they contain high volatilize materials. 对于不同的煤颗粒来说,挥发分析出的阶段是颗粒最容易发生破碎的阶段,含高挥发分的煤样在实际的燃烧破碎中更容易发生膨胀破碎。
- The country is short of known deposits of coal. 这个国家缺少已知的煤矿矿床。
- Probe into The Law of Coal Metamorphism in Xinzheng Mining Area 新郑矿区煤变质规律探讨
- Following the embryonic stage of development. 胚胎后期的在胚胎发育期之后的
- An inexhaustible supply of coal. 用之不竭的煤炭供应
- In the last stage of the race, her tiredness began to tell on her. 在赛跑的冲刺阶段，她开始显得筋疲力尽了。
- 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。
- This is the second stage of cognition. 这是认识的第二个阶段。
- 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。
