专业释义
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正长岩 - 引用次数：9
This granitic intrusion consists mainly of peralkaline alkali-feldspar granite and quartz syenite with subordinate syenite. These granitic rocks have a distinctive A-type chemistry characterized by elevated high-field-strength elements(HFSE) contents and high Ga/Al ratios(3.74 to 5.63).
太和花岗质岩体主要由超碱质花岗岩和石英正长岩及少量正长岩组成;富含高场强元素并具高Ga/Al值（3.745.63）,显示典型A型花岗岩的特征。
参考来源 - 峨眉山大火成岩省太和花岗岩的成因及构造意义正长石闪长岩变质中细粒石英闪长岩粗晶正长岩钾长岩碱长花岗岩角闪正长岩片麻岩片麻状角闪正长岩中细粒角闪石英正长岩
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柯林斯英汉双解大词典
syenite /ˈsaɪəˌnaɪt/
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1.
N a light-coloured coarse-grained plutonic igneous rock consisting of feldspars with hornblende or biotite 正长岩
双语例句
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The experimental rocks were granite, basalt, syenite and gneiss.
实验的岩石有花岗岩、玄武岩、正长岩和片麻岩。
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The creep of basalt aggregate concrete is smaller than that of syenite aggregate concrete.
正长岩骨料的混凝土徐变大于玄武岩骨料的混凝土徐变。
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It is composed of four rock units, they are gabbro, pyroxene syenite, (quartz) syenite and syenogranite from early to late.
岩性上自早到晚由辉长岩、辉石正长岩、（石英）正长岩和正长花岗岩等四个岩石单元构成。
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