UC知道生物专业英语第2版课文15课翻译
来源：百度知道 编辑：UC知道 时间：2024/06/28 12:11:43
请翻译这段话（来自生物英语15课）
Before use, the filter, its funnel, and the vacuum flask are sterilized by autoclaving or with alcohol, the latter method being quicker and more convenient. Vacuum filtration has a few disadvantages. If a water run vacuum aspirator is used, irregularities in the water flow may cause a backflow of air or water into the vacuum flask, introducing contaminants to the filtrate. Furthermore, if the filtrate contains organics may foam in vacuum and some of the more volatile organics may partly be removed by evaporation. To avoid these complications, it is probably better to use a pressure rather than a vacuum filtration system.
Before use, the filter, its funnel, and the vacuum flask are sterilized by autoclaving or with alcohol, the latter method being quicker and more convenient. Vacuum filtration has a few disadvantages. If a water run vacuum aspirator is used, irregularities in the water flow may cause a backflow of air or water into the vacuum flask, introducing contaminants to the filtrate. Furthermore, if the filtrate contains organics may foam in vacuum and some of the more volatile organics may partly be removed by evaporation. To avoid these complications, it is probably better to use a pressure rather than a vacuum filtration system.
在使用前，过滤器，它的渠道，以及保温瓶的消毒灭菌，或用酒精，后者的方法是更方便快捷。真空过滤有一些缺点。如果水运行外太空使用中的不正常现象水流可能会导致回流的空气或水进入保温瓶介绍污染物的滤液。此外，如果滤液含有有机物可能泡沫在真空和一些更不稳定的有机物可能部分被删除的蒸发。为了避免这些并发症，它可能是更好的使用压力，而不是一个真空过滤系统。