The optical properties of ===have been extensively reported in the literature. Since the prepared samples in this paper is based on===, their optical properties should be compared with the ones previously reported. 求大神指导是和别人以前做出来的数据相比吗?我的论文中已经和自己没有掺杂的比较了,但是这个审稿人的意思我不是太明白?求大神指导!!!!!!!