煤玉
- 与 煤玉 相关的网络例句 [注：此内容来源于网络，仅供参考]
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It is a variant (composed mainly of carbon and containing hydrogen and oxygen) of lignite.
煤玉是褐煤的一个变种（成分主要是碳，并含氢和氧）。
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Gagate is biogenic and noncrystalline, it is in dark luster on a coarse surface and in glassy luster.
煤玉为非晶质，在粗糙表面上呈暗淡光泽，在磨光面上为玻璃光泽。
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The jet samples are more compact than the coal samples because the honeycomb-like apertures of coal are filled with a large number of resinite arid gelatin for gelatination resulting in the changes of loose structure.
煤精与煤的产出环境相似，但宝石学特征差异较大，推断前者的成玉机制主要是由于含有大量且具有胶结作用的树脂体和凝胶体充填了煤的蜂巢状孔洞中，使煤较疏松的结构发生了改变而形成。
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Much attention is paid to petrologic recognition marks and distribution regulation of volcanic event strata in coal-bearing sequences of Taiyuan formation in the middle of North China.
概要：桑树勋刘焕杰贾玉如摘要研究了华北中部太原组含煤地层中火山事件层的岩石学识别标志和分布规律。研究结果表明：含煤地层中广泛发育火山事件层。
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The jet samples are more compact than the coal samples because the hon eycomb-like apertures of coat are filled with a large number of resinite and gelatin for gelati nation resulting in the changes of loose structure
煤精与煤的产出环境相似，但宝石学特征差异较大，推断前者的成玉机制主要是由于含有大量且具有胶结作用的树脂体和凝胶体充填了煤的蜂巢状孔洞中，使煤较疏松的结构发生了改变而形成。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。