(trace-element 的复数) [医]微量元素 trace elements: 痕量元素; 微量元素composite additive of trace elements: 复合微量元素添加剂deficiency of trace elements: 微量元素缺乏determination of trace elements: 微量元素的测定geochemistry of trace elements: 微量元素地球化学下载手机词典可随时随地查词查翻译