Azone is synthesized with caprolactam and 1 - bromododecane by phase transfer catalysis, the yield is > 70 %.以己内酰胺、澳代十二烷为原抖,采用相转移催化法合成氮酮, 收率达到70%以上.A wide | bore capillary was employed to determine caprolactam content.利用...
A wide | bore capillary was employed to determine caprolactam content.利用大口径柱测试己内酰胺生产中己内酰胺含量.This preparation uses dialkyl imidazole salt, alkyl pyridine salt or caprolactam and fatty acid as reactant.该方法使用带有二烷基咪唑盐 、 烷基吡啶...
Blue Merle: predominantly clear , silvery blue , splashed and marbled with black.三色: 黑色为主要色调,头部与腿部有大量黄褐色斑点.Colour Sable, Sable and white, Tricolour and Blue Merle.颜色黑貂色, 黑貂色与白色,三色, 芸石色.Ansel and Merle stand steady on the...
10,000 deaths a year from chronic lung disease are attributable to smoking.吸烟导致每年有1万人死于慢性肺病。Many of these poets appeared in print only long after their deaths.这些诗人中有很多都是在去世很久以后作品才得以发表的。Doctors still aren't sure what...
Are you tired of having twice as many lobbyists as they've ever had before?你们厌倦了加倍于以往的游说政客 吗 ?Toyota officials, lobbyists and dealers crowded into corridors outside the hearing room.听证室外的走廊上挤满了丰田高管 、 说客和经销商.Members ...