Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/4b1ab6e71ad6c7f786ab5831dc145520.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 bromination例句_bromination英汉例句_bromination双解例句_绍翊字体网有道词典
In cases of doubt the changes following hydrogenation, bromination or other chemical attack upon the double bond can be studied. 在有疑问时可以研究双键的氢化，溴化或其他化学反应所引起的变化。