轻质精炼油 natural resources and refined products: 天然资源和精加工产品refined products domestic demand: 精炼产品国内需求量refined products import: 精炼产品进口light refined petroleum oil: 轻精炼石油light solvent refined oil: 轻溶剂精制油下载手机词典可随时随地查词查翻译