chert

常见例句

双语例句

• Thus we can better understand the deformation of chert in a highly fluid form.
  这样我们就能更好地理解燧石在高度流体状态时的变形情况。
• The Anasazi made arrowheads by chipping away at pieces of glassy obsidian (black) and chert (grey and red) until they became sharp.
  古阿纳萨齐人通过细细地打磨黑曜石和黑硅石使它们变的锋利，最后制作出箭头来。
• The Middle Permian Chihsia Formation of South China is featured by nodular chert, which is of implications in the reconstruction of coeval paleogeography and paleoceanography.
  燧石结核是华南地区二叠纪栖霞组的重要识别特征之一，其成因具重要的古地理、古海洋意义。
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权威例句

• When he shone a light up through it, he could see fine-grained particles of silica, known as chert, mixed in with what looked like coal.
  NEWYORKER: The Martian Chroniclers
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