The natural gas engine gains an advantage of the cheap fuel and low let over other engines, so it is utilized universally in the field of petroleum and natural gas.
天然气发动机相对于其他动力机组，有着排放低、燃料价格低廉的优势，在石油天然气中得到广泛的应用。
Finding the correct gas-air ratio in producer gas drive engine is difficult as gas composition changes over a run, sometimes drastically.
发现生产者气驱发动机正确的气体，空气比过去困难，运行气体成分的变化，有时会大幅下降。
The technology research of the diesel engine off-gas control has been widely considered by experts all over the world.
柴油机尾气控制技术的研究已经得到国内外专家的广泛关注。
The technology research of the diesel engine off-gas control has been widely considered by experts all over the world.
柴油机尾气控制技术的研究已经得到国内外专家的广泛关注。
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