pitchstone

pitchstone

美 　英

• na.【地】松脂石
• 网络松脂岩

英汉解释

na.

1. 【地】松脂石

英英解释

n.	1. a dark hydrated volcanic glass similar to obsidian

例句

The pearl ore includes the pearlite, shines black the crag and the pitchstone.

珍珠岩矿包括珍珠岩，黑曜岩和松脂岩。

The pitchstone has the unique resinous luster, the water content 6~10%;

松脂岩具有独特的松脂光泽，含水量6~10%；