英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Vermiculite的结果
Vermiculite
(n.)
A group of minerals having, a micaceous structure.
They are hydrous silicates, derived generally from the alteration of
some kind of mica. So called because the scales, when heated, open out
into wormlike forms.