基本解释[经济学]砂布底布英汉例句双语例句Heavy paper backing, with medium softness, flat sanding surface and small extension. Suit for making various kinds of belts and specialty abrasives.重型纸基砂带，具有适中的柔软度，砂面平整、延伸率小，适合做各种砂带、砂卷和异型制品。backing for abrasives更多例句词组短语短语backing g for abrasives 砂布底布backing for abrasives更多词组专业释义经济学砂布底布