Preca普雷卡PREabbr.Petroleum Refining Engineer炼油工程师predefined message预定义报文precipitable water可降水分,可降水,可降水量preovulatory phase排卵前期pre-compensation预补偿pre-distribution预分配precompact mapping准紧映射pregastric satiety胃前饱感pre B-lymphocyte前B淋巴细胞pre-strcssed box预应力箱梁premenstrual phase经前期