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- Analysis of the mechanism of coal breaking by self-excited vibration water-jet;discussion on the influence of several parameters on pulverizing efficiency. 分析了自激振荡水射流超细粉碎系统对煤粉颗粒的粉碎机理,讨论了影响粉碎效率的几种因素。
- The big molecule of coal break down by the additive affixture,it can accelerate releasing of coal volatiles,make the coal lower ignition temperature. 同时使用不同的添加剂,可以在不同温度下释放出活性氧,有利于煤的完全燃烧。
- The paper emphatically analyses the interaction between the wall stress characteristic and coal getting by impact on the longwall face, proposes the work pattern of coal breaking by impact. 看重分析了长壁采煤工作面煤壁应力特点和冲击劈裂式采煤的相互作用关系，提出了冲击破煤的作业方式。
- Rotary chute applied to prevent lump coal breaking 螺旋溜槽在块煤防破碎中的应用
- The top coal broken mechanism and reasonable determination of caving coal heigh in caving coal faces are expounded. 主要阐述了放顶煤工作面顶煤破碎机理及放煤高度的合理确定;
- Study on coal break mode with point-attack pick cutting 镐齿截割煤断裂模式研究
- 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。
- 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。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
