pre-conditioning n.前調(diào)理pre-conditioned conjugate-gradient approach [地球科學]預處理共軛梯度法pre-condition n. 前提條件；先決條件pre-comminution 預粉碎pre-columbian art pre-colonial adj.淪為殖民地前的；殖民地時期前的pre-collector 前級除塵器pre-cold-frontal squall line 鋒前颮線pre-closure operator pre-cleaner 預凈機pre-chlorine 預氯化pre-chlorination 預氯化pre-cambrian period [地球科學]前寒武紀pre-burning 預燃pre-book v.預訂；預約pre-base 準基pre-atomic (adj.) pre-assessment 預評價pre-assembly n.前部件pre-arrangement (n.)