单种的

Now churn bored pile and slop breast wall pile have been broadly employed to high-rise building in xi'an area. Due to the different constructing technics, the dissertation analyzed the single pile's behavior under vertical load combined with engineering case, and compared the behavior between two kinds of pile.

1针对目前西安地区高层建筑广泛使用的旋挖成孔和泥浆护壁两种施工工艺的灌注桩，结合工程实例进行了竖向荷载下的单桩工作特性分析，并对两种施工工艺的灌注桩进行了比较。

The molecular trees show the species is a basal group in Smilax phylogenetic tree, and is of a parallel origin with other groups: some species with single umbel and most species with raceme of umbels.

在分子树上，它是处于菝葜属内基部的一个类群，与其它类群(包括部分单伞花序的种及大部分圆锥花序的种)是平行起源的。

The results showed as follow:(1) The method of improved CTABⅠequal to extract Magnoliaceae genomic DNA was developed, because the extracted DNA by the method was suitable for RAPD and ISSR analysis.(2) Single factor design combing uniform design was used to obtain optimum scheme on reaction system for RAPD and ISSR of Magnoliaceae.

研究结果如下：(1)建立了适合于木兰科6属20种植物DNA提取的改良CTAB法Ⅰ，用该法提取的DNA能满足RAPD和ISSR分析的要求；(2)采用单因素结合均匀试验设计优化得到适合于木兰科6属20种植物RAPD和ISSR分析的PCR体系。

Biodiesel is a renewable fuel consisting of the alkyl monoesters of fatty acids which are products of the transesterification of vegetable oils or animals fats with a simple monohydric alcohol in the presence of a suitable catalyst.

生物柴油是一种可再生能源，它是由植物油或动物脂肪与短链醇类在适当的催化剂作用下转酯化反应生成的脂肪酸单酯组成的。生物柴油作为一种可替代、无毒、生物降解性好和可再生性燃料，越来越受到人们的重视。

By changing the connection of stator windings to change the pole number,the Mixed pole-changing simplex winding multispeed asynchronous motor can obtain two kinds or above rotational speeds with one set of winding.

混相变极的单绕组多速异步电动机是利用改变定子绕组的接法，以改变电机的极数，从而使电机用一套绕组获得两种或两种以上转速的异步电动机。

But algae are on the other side of the great dividing line of life, that between creatures with a simple, single genome which is just a big loop of DNA sitting in the cell and those with genomes that are for the most part sequestered in a nucleus set aside for them, and cut up into multiple chromosomes.

但藻类是在生物分类的另一端，一种是简单的单基因组生物，不过是堆在细胞中的一大圈DNA，另一种，基因组大都隐藏在一个专用的核中，切割成多个染色体。

To study the effect of different types of web cleaner on the card sliver quality,we have done the comparison test between the guide plate web cleaner and the anti-teeth guided flat web cleaner under the condition of the same amount of air volume.

用USTER AFIS单纤维测试系统对上述条件所加工的生条进行了检测，结果显示：反齿导向盖板式棉网清洁器所生产的生条质量总体上要好于导板式棉网清洁器，其原因是反齿导向盖板排除短绒、杂质、棉结等的作用是一种&主动&作用，而导板式棉网清洁器对短绒、杂质、棉结等的排除是一种&被动&作用，梳棉机后罩板处棉网清洁器以采用反齿导向盖板式棉网清洁器为宜。

The state adjustors with given stability improve thesynchronization dynamic performance.(2) Adaptive synchronization and variable structure Backstepping synchronizationmethods are proposed for Liu chaotic system with uncertain parameters.

2提出了含不确定参数的Liu混沌系统的自适应同步和变结构Backstepping同步两种方法通过研究Liu混沌系统的单变量驱动和状态观测器两种同步方法，深入分析了Liu系统的结构特点。

In Genus Culter, genetic distance within species is obviously lower than that between species. And in the phylogenetic trees, all individuals of each species formed a clade. Then the conculsion was that mitochondrial CO1 gene was a good marker in Culter DNA barcoding. The conclusion was the same when the research group turned to Subfamily Cultrinae.

对鲌属物种的DNA条形码研究而言，其种间遗传距离显著地大于种内遗传距离，并且同一物种的不同个体均形成高支持率的单系，说明在鲌属类群中线粒体CO1基因是一个有效的DNA条形码标准基因。

Its principal purpose historically was one of confrontation as a means of asserting his/her resolve through single combat or the demonstration of one's proficiency.

它们主要的历史性目的是在面临单挑或证明自己精通打斗的过程中，成为一种肯定他/她决心的一种方式。

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。