pienaarite是什么意思

用法例句

ix rock reference materials including ijolite syenite,trachyte andesite,granodiorite,gabbro,rhyolite and dolomite were prepared.

研制了霓霞正长岩、粗面岩、花岗闪长岩、辉长岩、流纹岩及白云岩６种不同类型的岩石标准物质。