Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/74bafcd3483d9458b12343658f803d2e.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 Polyan例句_Polyan英汉例句_Polyan双解例句_食材铺反向词典
The novel methods and the new chances for coal's nonfuel application are provided by coal based polyaniline.The coal based polyan... 同时,煤基聚苯胺也为煤的非能源利用提供了新途径和新机遇,具有一定的推广价值。