Only small amounts of wurtzite boron nitride and lonsdaleite exist naturally or have been made in the lab so until now no one had realised their superior strength.
天然存在或者实验的纤锌矿型氮化硼和朗斯代石数量很少,直到现在,也没有发现它们令吃惊的硬度。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。
关注我们的微信
下载手机客户端
划词翻译
详细解释