Predis普雷迪斯PREabbr.Petroleum Refining Engineer炼油工程师precapillary arterioles毛细管前小动脉pre-interior operator预内部算子premandibular mesoblast下颌前中胚层prenuptial cohabitation婚前同居pre-deformation ratio预变形量pretreatment procedures预处理方法Pregnency complications妊娠并发症preflight investigation飞行前调查pre-emergence sprayer苗前喷雾器Premarital examinations婚前检查