短語詞組短語circulation degassing process 真空循環(huán)脫氧法circulation water process 循環(huán)水處理工藝nitrogen -circulation drying process 氮氣循環(huán)干燥oil circulation process 油循環(huán)過程hydrologic circulation process 水文循環(huán)過程merchandise circulation process 商品流轉(zhuǎn)過程as circulation process as 循環(huán)double decomposition circulation process 復(fù)分解循環(huán)法Complete circulation process 全循環(huán)過程 返回 circulation process