Refki雷夫基
refn.裁判员
Refluent ethanol extraction乙醇回流法
refractive index difference折光指数差别
Reforesting cultivated land退耕还林
refrigerated centrifugation冷冻离心法
refractive error/surgery屈光不正/外科手术
refract-reflect telescope折反望远镜
refrigeration to keep fresh产地冷藏保鲜
refrigeration air condition制冷空调
refining equipments in sets[化] 炼油成套设备
Refining-machine operator炼油机操作工(油和脂肪)