Pretti普雷蒂PREabbr.Petroleum Refining Engineer炼油工程师precipitable water va- por水汽总量pre-contracted information承包<合同>前信息predetermined overhead rates[经] 预定的制造费用分配率pre-stressed anchoring rod预应力锚杆precipitin-inhibition test沉淀素抑制试验Pre-heat treatment process预先热处理工艺premixed methane-air flame甲烷／空气预混火焰pre-consolidation pressure前期固结压力pre-career internet school职前网络学堂pre- occupational Training职前培训