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關注：1
2013-05-23 12:21
求翻譯：*Design of lamellar gravity settler, wastewater equalization tank, sludge conditioning tank, pH and ORP, ultrasonic level control system.是什么意思？ 待解決
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- 離問題結束還有
*Design of lamellar gravity settler, wastewater equalization tank, sludge conditioning tank, pH and ORP, ultrasonic level control system.
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