volcanic glass是什么意思 volcanic glass怎么读
volcanic glass的英文翻译是什么意思，词典释义与在线翻译
Noun:- a kind of natural glass produced when molten lava cools very rapidly
volcanic glass的用法和样例
- A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava.
黑曜岩火山玻璃，一般为黑色，带状，摔碎时色泽光亮，表面变曲，由火山熔岩迅速凝而成
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