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Direct discharge of yellow water without treatment would result in environmental pollution.
黄水不经处理直接排放，会造成环境污染。
youdao
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The mechanism on direct current arc discharge has been reviewed in this paper.
本文评述了直流电弧放电机理。
youdao
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The mechanism on direct current arc discharge has been reviewed in this paper.
本文评述了直流电弧放电机理。
youdao