preemn.初次上演
PREabbr.Petroleum Refining Engineer炼油工程师
premix molding预混料模塑
preflush fluid冲洗液
pre- loading预加载荷
preheater kiln预热器窑
precoated sand复模砂
preoptic areas视前区
pretectal area[医] 顶盖前区
preformylation预先甲酰化作用
Prexia culture先夏文化
preformed coil成型线圈