Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/0fe20271e2ce3400ad9996ff42ba7d7b.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 paraffine例句_paraffine英汉例句_paraffine双解例句_绍翊字体网有道词典
A new method which was used to measure the content of aromatics in the form of liquid paraffine by the ultraviolet spectrophotometry method was introduced. 提出了用紫外分光光度法测定液体石蜡中芳烃含量的新方法。