变异

结论Willis前环的A1优势征和Willis后环中大脑后动脉供血为颈动脉供血型、混合供血型者提示Willis动脉环形态变异；

Conclusion A1 odds sign in anterior Willis circle and the blood-supply type of PCA such as carotid artery type or mixed blood-supply type may hint Willis arterial circle heteromorphosis .

首先，考察变异思维与变形小说的发展。

First , it reviewed that the development of heteromorphosis thinking and metamorphosis novel .

他找到了该基因出现了变异形式的证据。

He found evidence of mutated forms of the gene .

该技术是通过放射线照射或者使用化学方法使基因变异。

The technique has been to mutate the genes by irradiation or chemicals

人类的变异受限于我们的基因可能存在哪些排列。

Variation among humans is limited to the possible permutations of our genes .

病毒会在携带者体内发生变异。

The virus mutates in the carrier 's body

一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异，使其不能繁殖，也不会再感染新的细胞。

A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells

如果病毒不能变异，也就不能够诱发疾病了。

If the virus cannot replicate itself , it cannot cause illness .

结果表明沃森和文特尔共有的基因序列变异少于他们每个人与金城振共有的基因序列变异。

It turned out that Watson and Venter shared fewer variations in their genetic sequences than they each shared with Kim .

这些变异将在“生存竞争”中被保留下来

Those variants will be preserved in the'struggle for existence " .

那个最佳形态成为下一个父代，带来其他变异

That best form became the next parent , begetting other mutations .

研究人员对灭活疫苗对抗变异病毒的能力进行了实验。

Researchers have been testing the antiviral-mutation ability of the inactivated vaccines .

他说我们低估了自然的变异性。

He says that we 've underestimated natural variability .

在美国，这种变异新冠病毒的病例数仍然很少。

Case numbers of the new variant are still somewhat small in the US .

但这种病毒大约有160种不同的类型，而且能快速变异。

However , there are around 160 different types and the viruses can quickly mutate .

自从2020年1月首次发现新冠病毒以来，已经检测到数千种变异病毒。

Since Covid-19 was first identified in January 2020 , thousands of mutations have been detected .

变异新冠病毒在美国的传播率每隔9天就增长近1倍。

The more contagious strain is nearly doubling its prevalence among confirmed cases in the US every nine days .

病毒会不停地变异，多数变种毒株都无足轻重，但有些变异则会让病毒变得更具传染性。

Viruses mutate all the time and most variants are inconsequential , but some can make a virus more contagious .

美国疾病控制与预防中心预测，这种变异新冠病毒或将在3月成为在美国传播的新冠病毒的主流。

The US Centers for Disease Control and Prevention ( CDC ) has predicted it could be the predominant strain by March .

没有证据表明新冠病毒的任何变异会让大多数确诊患者的病情加重。

There is no evidence that any mutations of the coronavirus cause much more serious illness for the vast majority of people .

报告发现，这种变异病毒的传染性比目前美国的其他毒株高35-45%。

This new strain is 35-45 % more transmissible than other strains of the virus currently in the US , the report found .

人们在利用科学来寻找一种能战胜所有类型流感的方法，不管是哪种病毒，也不管它变异了多少。

Science is on the hunt for a way to kill all types of flu , no matter the strain or how much it mutates .

这些免疫系统的武器能够设法深入流感病毒的内部，从而找到病毒无法变异的部分。

These weapons of the immune system are able to wriggle4 their way deep inside the flu virus to find the parts it cannot mutate .

至于该疫苗对变异毒株的有效性，陈薇表示，他们团队在密切关注相关情况，且早已启动针对变异株的疫苗研发，这个疫苗不一定用得上，但宁愿备而不用，不能用而不备。

In regards to the vaccine 's efficacy against mutated strains of SARS-CoV-2 , the virus responsible for COVID-19 , Chen said they are keeping a close eye on the situation and have begun developing vaccines for these new variants . " We may not need these vaccines , but we cannot be caught unprepared . "

三维时间飞跃法MR血管成像评价眼动脉解剖及变异

Three-dimensional time of flight MRA evaluation of anatomic variation of ophthalmic artery

鼻窦炎患者鼻窦骨结构变异和鼻窦粘膜异常的CT扫描分析

Paranasal sinus bony anatomic variations and mucosal abnormalities : CT analysis

双生病毒及伴随小分子DNA的基因组结构与变异研究

Molecular Characterization and Variation of Geminiviruses and Their Associated Small DNA Molecules

基于GIS和地统计学的农田土壤养分空间变异性研究

Spatial Variability of Farmland Soil Nutrients Based on GIS and Geo-statistics

X射线直接扫描法研究毛竹材密度的径向变异规律

Studies on Radial Variation in Density of Moso Bamboo Using X-ray Scanning

金属Al、Cu在激波作用下的变异

The changes of metal Al 、 Cu in the shock wave function