这里所谓的“空洞”不是字面上含义，并不存在任何一处平流层完全没有臭氧，科学家们用空洞这一说法来描述这些臭氧浓度低于历史读数220多布森单位的区域。
The hole isn't literal; no part of the stratosphere is empty of ozone. But scientists use the hole metaphor to describe the area where ozone drops below a historical concentration of 220 Dobson Units.
科学家们用“空洞”一词表示臭氧浓度低于220个多布森单位（多布森单位是用来度量大气中臭氧柱尺度的单位。
Scientists use "hole" as a metaphor for the area in which ozone concentrations drop below the historical threshold of 220 Dobson Units.
并把”采用床单位臭氧消毒器进行消毒”列入唯一指定的消毒方法。
The disinfecting method of disinfect with ozone disinfect or for bed unit has also been assigned as the only disinfecting method.
用载体定量杀菌试验和现场消毒试验观察了床单位臭氧消毒器对医院被服类物品消毒效果。
Carrier quantitative germicidal test and field disinfection trial were used to observe the efficacy of bed Unit Ozone Disinfector in disinfection of hospital bedding and clothing.
目的评价病床单位臭氧消毒的效果。
Objective to evaluate the effect of ozone used to sterilize sickbed unit.
研究表明，碳黑的表面含氧量与提供给单位碳黑表面的臭氧量成正比。
It was found that the oxygen concentration on carbon black surface is proportional to the ozone supplied per unit area of carbon black surface.
研究表明，碳黑的表面含氧量与提供给单位碳黑表面的臭氧量成正比。
It was found that the oxygen concentration on carbon black surface is proportional to the ozone supplied per unit area of carbon black surface.
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