The major reason of the formation of quench cracks is the contamination of oxygen in the early processing or unsuitable quench cooling rate during heat treatment.
基于两种机制的提出，可以较好地说明影响淬火裂纹形成的主要原因是氧的污染和不适宜的淬火冷却速度。
ObjectiveTo develop a new kind of herbal humidified fluid, which can reduce the rate of contamination of humidified fluid in oxygen administration and prevent the occurrence of nosocomial pneumonia.
研究目的研制一种新型的中药氧气湿化液——复方黄连氧气湿化液，以解决现行氧疗中湿化液污染的严重问题，降低湿化液的污染率，预防医院内肺部感染的发生。
RESULTS the contaminated oxygen filter of the cadre sickroom is very serious and the percentage is as high as 76%. Via using the new sterilization method, it can control the contamination.
结果干部病房氧气湿化瓶污染严重，污染率达76 %，通过使用新的消毒方法，完全可以控制氧气湿化瓶的污染。
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