Warning: file_put_contents(/home/www/wwwroot/zidian/69228.com/cache/a7810370912daa9a87e3c3b146764456.txt): failed to open stream: No space left on device in /home/www/wwwroot/zidian/69228.com/index.php on line 55 亚洲h无码动漫在线观看,久久国产精品色AV免费看,国产成精品在线观看
The result showed that satisfactory results could be obtained by using thionyl chloride as the chlorinating agent and bexanolactam as the catalyst. 結果表明,在己內酰胺存在下,用氯化亞砜氯化法是一種較理想的制備途徑。