beckelite是什么意思

用法例句

A series of Li-containing 8H-hexagonal perovskites in the formula of Ba_4LiNb_(3-x)Ta_xO_(12)(x=0～3) were synthesized by the conventional solid-state reaction route.

本论文介绍了几种新型六方钙钛矿型结构材料的合成,制备与微波性能研究。