Warning: file_put_contents(): Only 0 of 5039 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 免费黄色无码视频,亚洲AV无码成人YELLOW
1. N any of a class of organometallic reagents, having the general formula RMgX, where R is an organic group and X is a halogen atom: used in the synthesis of organic compounds 格利雅試劑[chem]