Warning: file_put_contents(): Only 0 of 7313 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.cn/index.php on line 55 excess extension例句_excess extension英汉例句_excess extension双解例句_开心英文字典_柠咚词
There existed an optimal dosage of the chain extender, lack of which caused deficiency of chain extension and excess of which led to more blocking reaction. 扩链剂的用量存在最佳值，用量不足时偶联反应不充分，用量过量时封端反应加剧。