1.
Study on development and accident of coal industries in modern china
中国近代煤矿业发展历程及煤矿事故概况研究
2.
But it is difficult to find a modern suitable analogue of ancient coal.
但苦于寻找古代煤层的合适的类比物。
3.
replace coal by [with] gas
用煤气代替煤作燃料
4.
jet and mineral substitute for jet, worked
煤玉及煤玉的矿物质替代品,已加工的
5.
Mechanism of seacoal in greensand and development history of placement addition of seacoal
煤粉防粘砂机理及煤粉代用品的发展
6.
Electric light has superseded gas light.
电灯已经取代了煤气灯。
7.
The gas lamp gradually lost ground to electric lighting.
电灯逐步取代了煤气灯.
8.
We replaced coal with oil.
我们用油代替了煤。
9.
Coal is one viable alternative.
煤是一种可行的代用品。
10.
2.1 Reducing coal use and switch to clean energy
（一）煤炭替代和削减方案
11.
On Modern Coal Mine in Lincheng (1897-1935)
近代临城煤矿述论(1897—1935)
12.
Electric lights have superseded gas lights in modern homes.
在现代家庭里,电灯已经取代了煤气灯。
13.
Coal-bearing Strata Age and Coal-accumulating Rule Analyses in Badaohao Coal Basin in Western Liaoning
辽西八道壕煤盆地含煤地层时代及聚煤规律分析
14.
The Study on Feasibility of Energy Substitutes and Limiting and Enduring the Coal of an Area in Chengdu
成都市某区能源替代及限煤禁煤可行性研究
15.
Sawdust fuel in coal-fired energy-saving alternative to coal-fired boiler application
木糠替代燃煤节能燃料在燃煤锅炉的应用研究
16.
Tectonic coal controlling patterns and coal-forming law in Mesozoic-Cenozoic in Tiefa basin
铁法盆地中新生代构造聚煤与控煤规律
17.
Production of high quality coke using meager-lean coal instead of lean coal
贫瘦煤替代瘦煤制备优质焦炭性能研究
18.
The gaslit era was over.
使用煤气灯的时代已经过去了。