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- dolocastic chert 白云石假晶燧石
- Chert Jie is looking at some picture. 教师引导学生看主情景图。
- Any of various hard,dark-colored rocks,especially basalt and chert. 暗色岩一种坚硬、暗色的岩石，尤指玄武石及燧石
- The sediments in this photo curve near the ends of chert pods. 这沉淀物在这幅图片的曲线近似冷凝物的黑矽石的扁豆形矿体。
- Paleontologists know chert as a good place to look for fossils. 古生物学家以黑硅石为化石采集地点的标志。
- 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。
- Any of various hard, dark - colored rocks, especially basalt and chert. 暗色岩一种坚硬、暗色的岩石，尤指玄武石及燧石
- Any of various hard, dark-colored rocks, especially basalt and chert. 暗色岩一种坚硬、暗色的岩石，尤指玄武石及燧石
- The thin-beded siliceous-rocks include chert and depositional quartz with textures of oolite and pebble. 矽质岩包括燧石和沈积石英岩，呈薄层状产出，沈积石英岩具鲕状、砾状结构。
- Carbonate rocks are predominantly composed of intra-clastic dolostone, chert dolostone and sand-bearing dolostone. 碳酸盐岩以内碎屑白云岩、燧石白云儿和含砂白云岩为主。
- The cardium sandstone is lithic, being composed of grains of chert, quartz, quartzite, silicified argillite, and other rock fragments. 卡迪砂岩是岩屑砂岩，由燧石，石英、石英岩、硅化泥板岩和其它岩石碎屑颗粒所组成。
- Chert with good abrasion is the major content in conglomerate, and diamonds are contained in it generally. 砾岩主要砾石成分为燧石,磨圆度较好,普遍含金刚石。
- The former is used when working with crystalline materials such as flint, chert and obsidian. 之前的人类使用的是晶体类的原料，例如燧石，黑硅石及黑曜石。
- A porous, lightweight, siliceous sedimentary rock composed of the shells of diatoms or radiolarians or of finely weathered chert, used as an abrasive and a polish. 硅土一种包含有硅藻土或砂藻土或已风化石粉末的黑硅土的脆而轻的硅沉积岩，用作研磨剂和抛光剂
- Igneous, metamorphic and sedimentary rocks are all featured including basalt, breccia, chert, gneiss, granite, limestone and pumice. 对火成岩、变质岩以及沉积岩（包括玄武岩、黑硅石、片麻岩、花岗岩、石灰石、浮石）作了更为详细的说明。
- The non-reactive feature of Qixia chert result from its asphalt content, which restrictes the alkali-aggregate reaction. 这种燧石非活性特征是由于其含有沥青质之故,沥青质的存在抑制了碱-集料反应的进行。
- Huang L H,Zhao F,Chert J M,et al.Studies on the photodegradation of direct blue on nanosized titania[J].Environmental Chemistry,2003,22(4):359-363. [9]黄丽华;赵蜂;陈建民;等.;纳米TiO2光催化降解直接耐晒蓝的研究[J]
- In Motuosarla Fe and Mn deposit, the chert mainly distributes in iron ore bed, some on its top and at its bottom, with a relatively stable thickness. 莫托萨拉铁锰矿中硅质岩多分布于铁矿层中,部分分布于铁矿层顶底部位,厚度较稳定。
- A porous,lightweight,siliceous sedimentary rock composed of the shells of diatoms or radiolarians or of finely weathered chert,used as an abrasive and a polish. 硅土，一种包含有硅藻土或砂藻土或已风化石粉末的黑硅土的脆而轻的硅沉积岩，用作研磨剂和抛光剂。
- 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. 摘要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。
