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gas from coal measures 煤系地层气
Introduced are the theory, progress, equipment, and industrial production of calcination of kaolinite from coal measures in China. 介绍了目前我国煤系高岭岩（土）的煅烧理论、进展、工艺设备和工业化生产状况。
A presentation is given of the identification and implementation of the extension and renovation plan for the low-pressure methanol unit based on gas from coal. 摘要介绍了煤制气低压单醇装置扩改技术方案的确定、实施项目。
The principle and method to measure the initial releasing expanding energy of gas from coal are introduced, and a set of measuring instrument is also built up. 介绍了测定煤样中初始释放瓦斯膨胀能的原理和测定方法，设计了一套初始释放瓦斯膨胀能的测定装置。
Conversion of your heating system from coal to gas will be costly. 你把暖气系统由烧煤改造成烧瓦斯会花好多钱。
Just over 45% of that came from power plants fuelled by gas from the North Sea.A further 35% or so came from coal, less than 15% from nuclear power and the rest from a hotch-potch of other sources. 45%25以上的电能源自以北海天然气作燃料的发电站，约35%25的电能源自煤炭，不到15%25的电能源自核动力装置，还有其它各种各样的来源。
We've converted from coal to gas central heating. 我们已由燃煤改换成燃气集中供暖。
Apart from coal ,the most important natural fuels are gas and oil . 除了煤以外，最重要的天然燃料是天然气和石油。
Control of SO 2 and NO X in the Flue Gas from Coal Burners 燃煤烟气中SO_2和NO_X的防治
Escape Do you smell an escape of gas from the pipe? 你闻到从管子里漏出的煤气味了吗?
Gases from deep in the earth bubble up through the lake. 地下深处的气体从湖底冒了出来。
The exhaust gas from factory often pollute the air. 从工厂排出来的废气经常污染空气。
Water, coal measures and salt have densities markedly different from other earth materials. 水、煤和盐的密度与其它介质有很大的差别。
Nylon is made from coal,water and air. 尼龙是用煤、水和空气制成的。
Do you smell an escape of gas from the pipe? 你闻到从管子里漏出的煤气味了吗？
He is going to make new things from coal and oil. 他打算用煤和石油制成新东西。
Gases from cars are poisoning the air of our cities. 汽车放出的废气在污染我们城市的空气。
An Experimental Research of Nickelic Waste Water Clarifier Made of Pyrites from Coal Measures 用煤系硫铁矿制备含镍废水净化剂的实验研究
In large cities people breathe in dangerous gases from cars and chimneys. 在城市，人们吸进汽车、烟囱排放出来的有害气体。
Apart from coal , the most important natural fuels are gas and oil . 除了煤以外，最重要的天然燃料是天然气和石油。