单词	calcium silicate
释义	calcium silicate noun : any of several silicates of calcium used especially in construction materials (such as Portland cement) Example Sentences Recent Examples on the Web The mineral—calcium silicate perovskite—originated more than 400 miles underground and provides geologists with a glimpse of the chemical makeup of the lower mantle, reports Harry Baker for Live Science. Rasha Aridi, Smithsonian Magazine, 16 Nov. 2021 The company envisions replacing limestone with a substance that is both carbon-free and freely available: calcium silicate. Justin Davidson, Curbed, 4 Dec. 2021 The mineral is mostly made of calcium silicate and appeared as nondescript dark blemishes in the diamond. NBC News, 16 Nov. 2021 Although the new mineral is mostly made up of calcium silicate, there could be traces of radioactive elements such as thorium and uranium. Rasha Aridi, Smithsonian Magazine, 16 Nov. 2021 The mineral, calcium silicate perovskite, only forms under the incredibly high pressures that occur deep in the earth. Stephanie Pappas, Scientific American, 11 Nov. 2021 Word History First Known Use 1869, in the meaning defined above
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