名词
中文翻译：辉长岩脉
同义词：
['syenite', 'pegmatite']
例句：
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1.The syenite-pegmatite formation is a unique geological feature in the region.
辉长岩脉是该地区独特的地质特征。
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2. The syenite-pegmatite veins are visible in the rock formations.
辉长岩脉在岩石构造中可见。
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3.The syenite-pegmatite deposit has been studied for its potential as a source of minerals.
辉长岩脉矿床已被研究，以探索其作为矿物来源的潜力。