square stone,ashlar,ashler是什么意思

用法例句

Microstructure characteristics of the cristobalite powder produced by direct calcination with nubby quartz;

石英块料直接煅烧法生产的方石英粉体显微结构特征

Effect of Cristobalite Content on the Properties of Ceramic Core in Making Directionally Solidified Hollow Blade;

影响定向空心叶片陶瓷型芯性能的一个重要因素──方石英含量的控制

However,the crystallization of cristobalite at elevated temperature has restricted its further application.

石英是一种重要的结构和功能材料,在航天飞行器、半导体、电子通讯和光学器件等领域得到重要应用,但是高温下方石英的析晶限制了它的进一步应用。

Using phase change catalyst, we can change quartez into α-cristobalite.

利用相变催化剂使石英转变成α-方石英后，加入到坯料中，提高成瓷的抗冲击强度。