煤的粒径对挥发分氮析出作用明显，煤粉越细，挥发分氮转化率越高。
The more finely pulverized coal has more higher conversion rate of volatile nitrogen.
我们可以用遗传工程技术将起作用的基因离析出来。
We can use genetic engineering techniques to isolate the gene that is responsible.
因为阴极极化作用超过一定范围，会导致氢气的大量析出，从而使镀层变得多孔、粗糙、疏松、烧焦，甚至是粉末状的，质量反而下降。
Because the cathode polarization effect more than a range, will lead to a large number of hydrogen, and separation coating becomes porous, rough, loose, scorched, even the powder, quality just drop.
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