earths pollution
地球的污染
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The results showed that H_(316) as a collector of rare earths, has the following advantages: having a high selective, easy preparation and non-environment pollution.
结果表明，H（316）是一种选择性好、配制方法简单、不污染环境的稀土矿物捕收剂。
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