Preegn.普里格PREabbr.Petroleum Refining Engineer炼油工程师preflight training飞行前的训练prereduction phase减数前期pre-heating mean预热方法prebacteriological[医] 细菌学发展以前的preheating process预热法pre drawing period描画前期prejudicial effect偏见效应prenuptial checkup婚前检查; 婚检prefabricated beam预制梁prearranged fights对练套路