Perlite, obsidian and pitchstone are volcanic glass having the same compositions commonly with rhyolite as well as andesite and basalt.
珍珠
、黑耀和
等玻璃质熔以酸性为主，中基性者也常见。
Perlite, obsidian and pitchstone are volcanic glass having the same compositions commonly with rhyolite as well as andesite and basalt.
珍珠、黑耀和等玻璃质熔以酸性为主，中基性者也常见。
声明：以上例
、词性分类均由互联网资源自动生成，部分未经过人工审
，
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