短語詞組短語circulation degassing process 真空循環(huán)脫氧法circulation water process 循環(huán)水処理工藝nitrogen -circulation drying process 氮?dú)庋h(huán)乾燥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 複分解循環(huán)法Complete circulation process 全循環(huán)過程 返回 circulation process