查询词典 locus

The locus of the center s of curvature of a given curve.

渐屈线一给定曲线率中心的轨迹

Results of this study showed that about 40% of the light is transmitted while 60% is reflected backwards when creating a balanced white light with chromaticity values on the blackbody locus.

本研究的结果显示，大约40%的光传输而60%是反映在创造平衡向后和色度值白光在黑体的轨迹。

By analytic geometry method and solving quadratic equation,a computer simulation algorithm of digital projection under arbitrary scanning locus was proposed.The algorithm is based on the rules of attenuation of monochromatic X-rays.Through mathematical modeling and computer simulation,digital projections of ellipsoid and cylinder in circular and helix scanning modes are exemplified respectively,which are proved to be correct by FDK and PI-line reconstruction algorithms.

介绍了一种利用解析几何和求解二次方程仿真任意扫描轨迹下的锥束射线投影数据算法，该方法基于单色射线贯穿物体的衰减理论，通过数学建模与计算机仿真，给出了椭球、圆柱两种典型模型分别在单圆、螺旋线扫描轨迹下的投影数据仿真结果，并利用FDK和PI线重建算法进行验证，证明了该种数值仿真方法的正确性。

G The forecasting system on spatial coverage of cumulative phenotypic frequency of HLA class 1 for designing HLA-based vaccines in China was build by combing the Kriging model with the molecule immunology of HLA locus.

将"Kriging"模型与HLA基因座的分子免疫学相结合，建立了中国多表位疫苗设计的HLA－Ⅰ积累表型频率空间预测系统。

The semenogelin locus on chromosome 20 contains at least 17 homologous genes encoding probable protease inhibitors with homology to semen coagulum proteins.

Semenogelin 位于20号染色体上，20号染色体上分布着至少17个编码蛋白酶抑制剂的同源基因，这些基因与精液凝结蛋白同源。

Secondly, quantifying markers: Because genes polymorphism or the codominant molecular marker electropherogram in a gene locus present 3 states, we can quantify them with -1,0 and 1 respectively.

将标记的在电泳时表现的三种状态：隐性纯合、杂合及显性纯合分别量化为"-1"、"0"和"1"。

Simple sequence repeats,alternatively called microsatellites,are regarded as useful and efficient markers for map construction of cotton,which are abundant,locus-specific,often codominant and multiallelic.

在众多的分子标记中，SSR标记具有分布广泛、位点特异性、共显性、信息量高等优点，是构建棉花遗传连锁图谱最有优势的标记。

At polymorphic gene locus, the variance components of quantitative trait was described as follows:VA=2βp and VG=p′Xp-G2 in which p=column vector of polymorphic allele frequencies,β=row vector of2,X=［a2ij］i×i matrix,aij=genotype value,and G=population mean.

数量性状相对多态座位的加性方差和遗传方差分别为VA=2βp和VG=p′Xp-G2，其中p′和p分别表示多态等位基因频率的行向量和列向量，X表示以基因型值平方为元素的矩阵，β表示以基因均效平方为元素的行向量，G为群体均数。

The complex vector model for permanent magnet synchronous motors is presented and the performance of the equivalent complex current controller is investigated using complex vector root locus and complex frequency response functions.

建立了永磁同步电机复矢量模型，应用复矢量根轨迹法和复矢量频域分析法对复平面等价形式的永磁同步电机电流调节器性能进行了研究。

The results showed that:(1) we can mapping quantitative trait locus while estimating the variance component of QTL;(2) granddaughter design is better than daughter design when mapping QTL;(3) it is easy to map a QTL for trait with a high heriability and a large QTL variance contribution;(4) we can estimate the variance component of a QTL by TM-BLUP based on ML method whether the QTL has only 2 alleles or QTL has normal distributed alleles effects;(5) the estimation accuracy of variance component contributed by QTL was improved by using of grand daughter design;(6) the higher the heritability and the QTL variance contribution was, the more accurate estimation of QTL variance component.

结果表明：（1）采用随机QTL效应模型和最大似然法，在估计QTL方差组分的同时，能够定位QTL；（2）孙女设计与女儿设计相比，在其它因素相同时，容易检出QTL；（3）遗传力高，QTL方差贡献较大的性状，QTL检出的效果优于遗传力低，QTL方差贡献较小的性状；（4）无论QTL上有2个等位基因，还是QTL上等位基因的效应服从正态分布，都可将其看作随机效应，采用基于TM-BLUP的ML法，估计其方差组分和定位QTL；（5）QTL方差组分估计的准确性，孙女设计高于女儿设计；（6）遗传力高的性状，QTL方差贡献大的QTL，QTL方差组分估计的准确性高。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。