Preci普雷奇PREabbr.Petroleum Refining Engineer炼油工程师prevision of danger预感到危险precession constant岁差常数predetermined basis[经] 预定的基础(根据), 按预定数额分配法premaxillary suture颌前缝precast hollow slab预制空心板Pre-trial Chamber预审分庭preload disc spring预紧碟簧pre-volatile time预膜时间Pre-brushing time预冲刷时间precipitin reaction沉淀素反应,沉淀反应