起源的

All of the taxa have SC are belong to PT clade or AD clade in Pteridaceae, including Actiniopteris, Onychium, Pityrogramma, Pteris, Adiantum, and vittarioids.

重建特徵演化树的结果则显示凤尾蕨支与铁线蕨支之矽异形细胞应为不同起源，其中凤尾蕨支内的矽异形细胞亦可能为多次起源。

Creole-genesis theories and their claims on the origins of Creole culture and on the formation of Caribbean identities.

克理奥尔语起源和他们主张对於克理奥尔文化的起源和加勒比海身分认同的形成。

They are mainly from the West Indies, India and Pakistan.

英国的起源第二节英国的起源 21。

The appearance of anatomically modern Homo sapiens is a hotly debated issue in paleoanthropology.

现代人起源是当前古人类学研究的热点，"多地区连续演化"和"非洲起源"两种主要假说已争论多年。

The medium of 1/2MS+ 0.4mg/L NAA +0,2mg/L IBA was used for rooting, and the rooting rate was 75%. The origin and development of somatic embryos was observed by histological method. It was found that the somatic embryos of Aesculus hippocastanum L were developed from single cell.

通过组织细胞学方法研究体细胞胚的起源与发生部位，发现欧洲七叶树体细胞胚为单细胞起源，外植体的表面及内部都可以发生体细胞胚。

Arche is the Greek for "origin."

起源 希腊文 Arche 的意思是&起源&。

The characteristics of Chinese ancient civilization are pleophyletic unification and a model of a large united kingdom,which can be called asChinese mo...

中国古代文明起源与形成的特点是多源一体和统一王朝式，这或可称为古代文明起源与形成的中国模式。

Both the two sides superior thyroid arteries were mainly arose from antero-endhymenine wall of genesis arteries (58.45%), inferior thyroid arteries of the thyrocervical trunk from endhymenine wall, and the ima thyroid arteries of genesis arteries all from anterior wall.

甲状腺上动脉源自起源动脉前内壁最多(58.45%)；起源于甲状颈干的双侧甲状腺下动脉均源自其内侧壁；甲状腺最下动脉均源自起源动脉前壁。

Sequence homologies suggest that both mitochondria and chloroplasts have evolved separately from lineages that are common with eubacteria, with mitochondria sharing an origin with a-purple bacteria, and chloroplasts sharing an origin with cyanobacteria.

序列同源建议，线粒体和叶绿体分开地演变了与是共同与eubacteria，用线粒体分享起源与紫色细菌，和叶绿体分享起源与cyanobacteria 的后裔。

To investigate the origin, genetic structure and genetic relationship of Chinese sheep , Tan sheep , Sunite sheep , Diqing sheep , Gangba sheep , Langkazi sheep , Yuxi fat-tailed sheep , Inner Mongolian semi-fine sheep , Alety sheep , Duolang sheep , Fat-tailed han sheep , Jinzhong sheep and multi-horned Mongolian sheep were studied by using mtDNA.

为了进一步了解我国绵羊起源、群体遗传结构、群体遗传关系，本研究利用线粒体DNA标记分析了滩羊、苏尼特羊、迪庆羊、岗巴羊、浪卡子羊、豫西脂尾羊、内蒙古细毛羊、阿勒泰羊、多浪羊、大尾寒羊、晋中绵羊、蒙古羊羊等15个绵羊品种的遗传多样性和起源进化。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。