Pretti普雷蒂PREabbr.Petroleum Refining Engineer炼油工程师pre-examination and triage预检分诊pre-and after- processes前后纺工艺pre-crosslinking technique预交联precession of vibrating mode振型进动pre-collection stimulation采精前刺激pre-scientific conceptions前科学概念pre - stressed anchor line预应力锚索pretest information modeling验前信息建模pre-finishing drawing mill预精轧机premixed concrete technology预拌混凝土技术