Warning: file_put_contents(/home/www/wwwroot/ndsq.cn/cache/2c388867744a874c237a76dbb9fadb03.txt): failed to open stream: No space left on device in /home/www/wwwroot/ndsq.cn/index.php on line 55 bromobutane例句_bromobutane英汉例句_bromobutane双解例句_开心英文字典_柠咚词
Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation, cyclization and bromination with total yield of 61%. 以2-溴丁烷和尿素作为起始原料，经缩合、环化、溴代三步反应得到除草定，总收率为61%。