Prelo普雷洛PREabbr.Petroleum Refining Engineer炼油工程师pre-excited area预激区pre - experiment预试验prefabricated deck预制楼板precautive measure预防措施preextraction cast处理前模型, 诊断模predominating path主要路径pre - employment预就业pre - experience前验predefined segment预定义段pre - anesthesia麻醉前