在渗滤液释放回附近的河道之前，必须得让它们符合严格的标准。其中包括氨、重金属以及任何化学物的最大指标，它们都很可能导致氧元素的损耗。
Before it can be released back into the nearby watercourses it has to meet stringent standards, including maximum levels of ammonia, heavy metals and any chemicals that might cause oxygen depletion.
在超纯水技术中，我们的系统既减少原水损耗，又采用极少的化学品。
Even within our Ultra Pure water systems we apply technologies that either requires less raw water or very little chemicals.
近年来， 臭氧层因受到消耗臭氧层化学物质（简称ODS）的损耗，而造成的平衡破坏、 浓度降低成为全球性的环保热点问题。
Ozone Layer was worn down by ODS recently, which resulted in the breaking of ozone layer′s balance and the decreasing of ozone layer′s thickness.
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