几倍的

All of these elements were also found in the shell, and their MEC are tens to hundreds times higher than those in the gonad.

这些元素几乎都同样在棘壳中存在，而且棘壳中的浓度比生殖腺的高出几十倍到几百倍。

The normal feather Wugu chickens also had a lot of maternal ancestors; the result showed that at least six populations of red jungle fowl contributed to the gene pool of the domestic fowls.

丝羽乌骨鸡为常羽乌骨鸡的突变型，常羽乌骨鸡有比丝羽乌骨鸡更多的单倍型类型，而且在丝羽乌骨鸡群体中出现的几种主体单倍型类型也是常羽乌骨鸡群体的主体单倍型。

In this article, the new advances in polyploid origin, the methords of induction and identification, and polyploidy application are discussed.The problems that exist in the process of polypl...

文中介绍了植物多倍体起源、诱导方法、鉴定方法及多倍体应用等方面的研究进展，并对植物多倍体研究过程中所存在的几个问题进行了探讨。

On that basis,the authors used the single-factor assessment method and multi-factor assessment method(comprehensive pollution index and Nemeron pollution index)to assess the data of groundwater pollution by this refuse landfill site.

结果表明，该垃圾场对地下水的污染极其严重：综合污染指数可达到59；单项污染组分如NO2-、NH4+、COD等普遍比参照值高出几十倍，致癌物质NO2-则高出340多倍。从水质的角度看，地下水中有的污染物(NO2-、NH4+、COD)已经超出地下水Ⅲ类水质标准数十倍甚至100多倍，到了不能饮用的程度。

Then detailedly introduces the principle of pole-changing modulating speed and design feature in times pole proportion and non times pole proportion in the Mixed pole-changing simplex winding multispeed asynchronous motor , carry on discuss to the main parts of electrical machinery electromagnetism computation; by using VISUAL BASIC under WINDOWS platform for computer-aided design method for the mixed pole-changing simplex winding multispeed asynchronous machine, carries on profound analysis for the computer-aided design in the following aspect such as rotor and setting flush piece size, groove shape size, the rotor and setting winding connection, and start performance.

本文在介绍了单绕组多速电动机的概况，阐述了目前多速电机的发展现状与前景；利用槽号相位图以及混相原理对变极绕组进行了研究，确定了绕组的混相方案；并详细地介绍了混相变极单绕组多速电机在倍极比与非倍极比时的变极调速原理以及设计特点；对电机电磁计算的主要几个部分进行了讨论；介绍了使用WINDOWS平台下的VISUAL BASIC对混相变极单绕组多速异步电机的计算机辅助设计方法，对混相变极单绕组多速异步电机的定转子冲片尺寸、槽形尺寸、定转子绕组接法、定转子相带、起动性能的几个方面的计算机辅助计算进行了深刻分析；最后，对混相变极单绕组多速异步电机的样机检测试验结果进行了分析。

The article mainly describes the properties of millimeter wave, millimeter wave sources and millimeter wave multiplier's nowadays development at the first chapter. It also analyses several common multiplying methods associated with the subject's requirement and the realistic conditions according to which a proposal is confirmed that three-stage cascade connection fulfill 8 times multiplying.

本文综述了毫米波特点，毫米波源、毫米波倍频器的发展现状，分析了几种通常采用的倍频方式，并以此为依据结合课题需要和现实条件确定了采用三级级联倍频实现八次倍频的方案。

Video data can be compressed by several decuples, even several hundred folds, which dramatically promotes the development of video communications.

视频编码技术可以将视频数据压缩几十倍，甚至几百倍，有力地推动了视频通信的发展。

Polytene chromosome structure is a characteristic of some polyploid cells where several to thousands of chromatids are closely associated with perfect alignment of homologous DNA sequences.

多染色体结构是多倍体细胞的特征。在多倍体细胞中，有几个至几千个染色单体与相对应的DNA序列精确结合。

The result showed that: 1 Gill epithelium nucleus major-axis size, hemolymph nucleus diameter in the connective tissue of mantle and labial palps were significantly (P＜0.001) larger in triploids than in diploids, no significantly differences were found in rectum epithelium height between diploids and triploids.

另外，通过组织切片、扫描电镜和透射电镜等方法比较了二倍体和三倍体太平洋牡蛎的几种组织器官的细胞大小、鳃的表面结构和鳃的超微结构，二倍体和四倍体精子的超微结构上的差异，旨在为更好的发展多倍体育种技术、探索多倍体的快速生长机制提供理论依据。

An optical microscope of good quality can produce magnifications of several thousands of times, but in practice it is employed only for magnifications up to approximately 1000 times.

一个高质量的光学显微镜可将倍率放大几千倍，但在实际应用中，只能放大约1000倍。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷