The application of 3% nitric acid and 3% aqua regia yielded good results in nanoscale material geochemical survey in known concealed ore districts.是什么意思_The application of 3% nitric acid and 3% aqua regia yielded good results in nanoscale material geochemical survey in known concealed ore districts.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句