Warning: file_put_contents(): Only 0 of 4892 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/62383.com/index.php on line 55 rare gas compound例句_rare gas compound英汉例句_rare gas compound双解例句_流逝汉英词典
Derivative gas chromatography is used to analyze the fluorinated compound derived from the gas out of the rare earth concentrates containing fluorine. 应用衍生气相色谱法测定含氟稀土精矿焙烧逸出气体中的氟化物。