以L - 精氨酸 、 L - 甘氨酸、L - 天门氨酸为原料, 采用二环己基碳二亚胺(DCC)法合成了Arg-Gly-Asp ( RGD ). Takintg L - Arginine, L - Glycine and L - Aspartate as a raw material, used DCC coupling method to synthesize Arg - Gly - Asp ( RGD ).
科的相似性,如马鞭草科与唇形科的相似性,是进化上的趋同造成的.The resemblance of families such as the Verbenaceae and Labiate is the result of evolutionary convergence.他们的行状如马,奔跑如马兵.They have the appearance of horses ; they gallop along like cavalry.他...
I am luckier than most. I have a job.我比大部分人幸运。我有份工作。'You are a luckier, if you mean that.'“ 你比我要幸运些, 假如你是那意思的话. ”Some people are luckier in some things than others.有些人在有些事情上运气就是比别人好....
Please describe the characteristics of hydroponic and front views of marketing.试论述水培花卉的特点?你对其市场前景有何看法?Nickel ( Ni ) absorption and accumulation in tea plants were studied by hydroponic and pot experiments.通过盆栽和水培试验,研究了镍元...
Multiple network transmissions overlapping in the physical channel, resulting in garbled data and necessitating retransmission.多个网络传输重迭发生在同一物理信道上, 它导致数据被破坏,因而必须重传.They have been accused of deliberately causing interferen...