Aspirin is synthesized through O - acylating reaction from acid and anhydride acid with anhydrous carbonate as catalyst.以水杨酸和乙酸酐为原料,采用无水碳酸钠作为催化剂经O - 酰化反应合成了阿司匹林.One advisable way is to synthesize NFM acylating morpholine...
They were reported to be unloading trucks filled with looted furniture.有人举报说他们正在从满满当当的卡车上卸洗劫来的家具。Dockers started unloading the ship.码头工人开始卸船.The ship is unloading.该船正在卸货....
网箱各尺寸参数影响网箱的水动力特性.The parameters of cage size have an effect on the hydrodynamic characteristics.采取上述技术措施,网箱内培育的仔蟹成活率为75% 、 水泥池达86%、池塘为 40.5%.The resultslarval survival rate are 75 % ( cage ) , 86 % ( cement pool ) and 4...
他对教义的解释一改旧貌.He preached a doctrine which was new to him.达修亚历山大时期的希腊主教,是基督教正统教派反对阿里乌斯教义的主要保卫者.Greek patriarch of alexandria and leading defender of Christian orthodoxy against arianism.(宗教)属于或关于新教、新教徒或新教教义的.Adherence to t...
All her letters were carefully filed away in folders...她所有的信件都整齐地放在文件夹中。He sorted the materials into their folders...他把材料分门别类放进了文件夹。By insertion of photocopies, all folders can be maintained complete with little extra ef...