The important fators which affect culture conditions of ? Halobacterium halobium ? B were screened by Plackett? Burman design. 利用Plackett-Burman设计筛选出影响盐生盐杆菌( Halobacteriumhalobium )B培养条件的重要因素,然后利用正交试验设计对这些重要因素加以优化.
By and by papa got too handy with his hickory and I couldn't stand it.后来爸把他那根胡桃棍儿使得太顺手,我简直受不了啦.September a changeling, busy a squirrel a hickory tree, idle a languid brook.九月真是变幻莫测, 忙来如山核桃树上的松鼠, 闲来却又象懒散缓流的小溪.Septemb...
令人难解的是, 他竟一直保持沈默.Unaccountably, he kept silent.脚注阐明了文中难解的段落.Footnotes illuminated the difficult passages of the text.有关范数和谱的问题多半是难解的.Questions about norms and spectra are likely to be recalcitrant....
信写得很短——只是简单地说了一下他们的问题。The letter was short — a simple recitation of their problem.她简单几句话就杀了他的威风。In a few words she had put him in his place.虽然地税在细节上复杂得要命，但在本质上却很简单。Though off-puttingly complicated in detail, local taxes ...