Preet普里特PREabbr.Petroleum Refining Engineer炼油工程师preadaptive phase前适应阶段preharvest period收获前期prewashing column预洗涤塔pretrial releaser审(判)前释放人员preehloramination预氯胺化Predenoised image预去噪图像pre-convergence预收敛pre-heated zone预热区Preimbrium system前雨海系pre ulsion system壁板颤振