不是都要用硫酸纸的，但是如果很精确的画就需要了，你可以google一下

来源: BloomLover 于 2017-02-09 19:40:39 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.