当芯片完成使命成为垃圾后，其里面的金属杂质也可以过滤出来，但会污染环境。
These metal impurities can also leach out, becoming an environmental pollutant when the chip is trashed at the end of its lifetime.
结果表明：电火花线切割单晶硅损伤层主要由杂质元素重污染层、重熔层和含有高密度位错的弹性畸变层组成；
The results show that the damaged layer of silicon cut by WEDM mainly appears massive impurity elements, remelted and elastic distortion with a high density dislocation.
本文就是根据地下水的诸多杂质含量的实测数据，用模糊数学的方法评价地下水的污染程度，判定水质等级的一种尝试。
Based on the measured contents of multiple impurities of groundwater, this paper attempts to use fuzzy mathematical method to evaluate the pollution of groundwater and to determine the water quality.
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