Presas普雷萨斯Presabbr.主席；总统(=President)abbr.现在(=present)presumptive legality公定力preservation of food食品保藏, 食物保存Preservation of skin皮肤皱襞presowing irrigation播前灌水,播前灌溉prestresssed anchors预应力锚杆（索）presumptive taxation推定税制presqualene synthase原角鲨烯合酶preseparation column预分离柱presaturation column预饱和柱preservation by salt腌制保藏