基本解释[化学]醋酸铍英汉例句双语例句Jiuhe optical are specialized in metal frames , Beryllium copper glasses castings , glasses acetate tips and temples.久和的产品主要有眼镜腿和腿套、铍铜铸件和金属眼镜架。词组短语短语Basic beryllium acetate 碱式醋酸铍专业释义化学醋酸铍