| 释义 |
〔novaculite〕A very hard, dense, even-textured, silica-bearing sedimentary rock used in whetstones.均密石英岩:非常坚硬,致密,结构均匀,含硅的沉积岩,用作磨石〔quartzite〕A rock formed from the metamorphism of quartz sandstone.石英岩:一种由石英沙岩的变质作用而形成的岩石〔ganister〕A fine-grained quartzite used to line refractory furnaces.致密矽石:一种纹理细密的石英岩,用于作耐温溶炉的衬里 |