单词：useful magnification
有效倍率
单词：useful magnification 相关文章
台湾籍旅美老师今天交给我们的句子是： Ideally the diamond is flawless if you can't see any of that stuff under ten times the magnification. The higher the clarity the more rare and expensive it is. 理想来说一颗钻石在放大了十
发表于:2019-02-22 / 阅读(85) / 评论(0)
留美老师带你每日说英文
留美老师带你每日说英文