Prelohn.普雷洛PREabbr.Petroleum Refining Engineer炼油工程师pre-genital fixation前性器期固着pre-stress component预应力构件premarital health care婚前保健precast concrete panel预制混凝土墙板Pre-heat temperature预热温度precordial stethoscope心前区听诊器premonitory heatstroke先兆中暑pre-semiopen L-set拟半开集pre-tensioned column张力柱pre-existing bubbles原有存气泡