Unburnt vegetation rots quickly, but black carbon persists in the soil for many centuries.
未燃烧的植物腐烂得很快，但黑碳在土壤中存留了好几个世纪。
In a few moments the flame would flutter and go out - with still an inch of candle unburnt.
再过一小会儿，蜡烛的火焰就会忽明忽暗地跳动，最后完全熄灭——中间仍有一英寸未燃尽。
The studied results of behavior of unburnt pulverized coal in process of PCI in BF are summarized.
总结了高炉喷煤尤其是大量喷煤中未燃煤粉行为的研究结果。
Through removing partial unburnt carbon in fly ash by flotation, the quality of fly ash can be improved.
采用浮选法可除掉粉煤灰中部分未燃尽炭，在降低了含炭量后，粉煤灰的质量得到很大提高。
Owing to the high proportion of unburnt oxygen in this efflux, afterburners are often provided in the jet-pipe.
由于这种喷气流中含有大量未燃烧的氧气，在喷管中往往安装加力燃烧室。
Owing to the high proportion of unburnt oxygen in this efflux, afterburners are often provided in the jet -pipe.
由于这种喷气流中含有大量未燃烧的氧气，在喷管中往往安装加力燃烧室。
Owing to the high proportion of unburnt oxygen in this efflux, afterburners are often provided in the jet- pipe .
由于这种喷气流中含有大量未燃烧的氧气，在喷管中往往安装加力燃烧室。
It points out there are both advantageous and disadvantageous influence of UPC (unburnt pulverized coal) on the work of BF.
指出，未燃煤粉的存在对炉况的影响有利有弊。
By combine fundamental principle of photoacoustic response, the measuring unburnt carbon in fly ash by photoacoustic response is studied, and the instrument design is introduced.
以光声效应的基本原理为理论基础，介绍了应用光场效应检测粉煤灰中碳含量的研究及仪器的结构设计。
You see various scenes passing on a cinema screen: fire seems to burn buildings to ashes; water seems to wreck ships; but the screen on which the pictures are projected remains unburnt and dry.
你可以看见在一个荧屏上有各种各样的场景：火似乎要把房子烧成灰，水似乎要把船沉没，但是有着各样的图片在其上的荧幕本身却既未烧毁也不湿。
You see various scenes passing on a cinema screen: fire seems to burn buildings to ashes; water seems to wreck ships; but the screen on which the pictures are projected remains unburnt and dry.
你可以看见在一个荧屏上有各种各样的场景：火似乎要把房子烧成灰，水似乎要把船沉没，但是有着各样的图片在其上的荧幕本身却既未烧毁也不湿。
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