Preet普里特PREabbr.Petroleum Refining Engineer炼油工程师Pre-coated coil预涂卷材pre-laid method预铺反粘法precompressed air预压缩的空气pretreating agent预处理剂pre-supervision事前监督precolored pellet预着色粒料predisposing gene易感基因pre-stress skin预应力蒙皮precast roof slab预制屋顶板pre- distortion预失真