nanometer calcium carbonate 基本例句 纳米碳酸钙 The surface of nanometer CaCO3 powder was modified with stearic acid.The surface characterization of modified CaCO3 has been investigated by means of FT-IR, TEM, etc.对纳米碳酸钙进行了表面改性，并对改性后的碳酸钙进行了表征，填充在涂料中，对涂料性能进行考察。