P 开头单词
pre-conditioning n.前调理
pre-conditioned conjugate-gradient approach [地球科学]预处理共轭梯度法
pre-condition n. 前提条件；先决条件
pre-comminution 预粉碎
pre-colonial adj.沦为殖民地前的；殖民地时期前的
pre-collector 前级除尘器
pre-cold-frontal squall line 锋前飑线
pre-cleaner 预净机
pre-chlorine 预氯化
pre-chlorination 预氯化
pre-cambrian period [地球科学]前寒武纪
pre-burning 预燃
pre-book v.预订；预约
pre-base 准基
pre-assessment 预评价
pre-assembly n.前部件