auto purification 路平机; 自动净化; 自净化 batch purification 分批净化; 分批净油; 间歇精制; 间歇式净化; 间歇匀精制, 分批式精制 ..
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auto purification coefficient 自净系数
auto-emission purification 汽车尾气净化
Shanghai Jiao Tong University attached their importance to such exhibitions as key technology of reproducing used auto engine parts and of countryside new sewage purification.
上海交通大学也将汽车发动机退役零部件再制造关键技术和农村新型污水净化系统作为重点进行了展示。
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