preliminary to在 ... 之前preliminaryadj.初步的；预备的；开始的n.初步行动；准备；初步措施preliminary production[化] 初期产量preliminary clearifier初步澄清池preliminary dimensions预定尺寸preliminary operations初期业务,准备工序preliminary correction初校正preliminary diseussion初步探讨preliminary compaction预压紧preliminary cataloging预编Preliminary technician预备技师preliminary impression[医] 初印模