pretrn.前置收发开关
PREabbr.Petroleum Refining Engineer炼油工程师
prefetch time预取时间
prekallikrein前激肽释放酶,激肽释放酶原
predeflection预偏转,偏转之前
pre-stowage预配
premordial qi金男
preterminfant早产儿
pre-warningn.预警
preinitiation提前起爆;始发前
pre-plating预镀
predetonation预爆轰[震]