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3 Noun 0 Verb 0 Adj. 0 Adv.
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ZH打火石Noun
ZH
燧石俗称火石，是一种比较常见的硅质岩石，主要由隐晶质石英（SiO2）组成，致密、坚硬，多为灰、黑色，敲碎后具有贝壳状断口，根据其存在状态，分为两种类型： 层状燧石：多与含磷和含锰的黏土层共生，分层存在，单层厚度不大，但总厚度可达几百公尺，有块状和鲕状的区别。
燧石弗林特
bn:00035233n Concept
EN
Pebbles of flint used in masonry construction
燧石
bn:00035240n Concept
EN
A piece of flint that is struck to light a fire
燧石耐火石
bn:00034707n Concept

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