To aerobic microbial enhanced oil recovery, determining the amount of oxygen injection is a problem urgently to be solved.

注入多少氧气是好氧微生物驱油技术亟待解决的问题。

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The oxygen injection by top lance and side lance can increase the effective stirring power and enhance heat transfer efficiency.

通过顶枪、侧枪吹氧，可以提高搅拌能，提高传热效率。

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The practice is introduced for refining industrial grade silicon by oxygen injection to the bottom of two-man ladle through self-makings pray nozzle system.

介绍了通过自制的喷嘴系统，向抬包底部喷吹氧气精炼工业硅的生产实践。

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Bolt comes with a trick-looking two-into-one exhaust system, which includes an oxygen sensor and exhaust gas catalyst that works with the closed-loop fuel injection system.

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