Objective To investigate the genetic polymorphism of HLA-B locus in Guangdong Han population and compare the characteristic of the allele frequency distribution with that in other populations.
目的调查广东汉族人群HLA-B位点基因多态性，比较不同人群HLA-B等位基因频率分布特征。
Methods A simple, rapid and sensitive poly-nuclear cell assay was used to investigate the frequency of HPRT locus mutation.
方法采用多核细胞法研究肿瘤患者外周血淋巴细胞HPRT基因位点的突变频率，并与正常人群进行对比。
The relatively complete theory of frequency method and root locus method for the design of automatic control system was set up through the efforts of numerous scholars after world war II.
二次大战以后，经过众多学者的努力，形成了较为完整的自动控制系统设计的频率法理论和根轨迹法理论。
The basic principle of the graphic method is introduced, and an example verified the particle frequency stability conclusions that are got through the root locus method.
介绍了图示法的基本原理，并举例验证了通过根轨迹得出的部分频率稳定性结论。
Objective: To screen a new Y-chromosome locus and investigate the distribution of allele frequency in Shanxi han population.
目的：筛选新的Y染色体基因座，调查其在山西汉族人群中的等位基因频率分布。
The frequency of DXS15, CA13, CA22 locus conforms to Hardy-Weinberg equilibrium, insuring the reliability of their application to evaluate larger groups.
CA13，CA22位点的等位基因的频率较高，符合H-W遗传平衡定律，以此来估计群体的调查资料是可靠的。
The lab has ten experiments, covering time and frequency domain analysis of linear system, root locus and series compensation of linear system, analysis of discrete and nonlinear system.
本虚拟实验室共设计了十个实验，内容涉及线性系统时域分析、线性系统的根轨迹、线性系统频域分析、线性系统串联校正、离散系统分析和非线性系统分析。
The lab has ten experiments, covering time and frequency domain analysis of linear system, root locus and series compensation of linear system, analysis of discrete and nonlinear system.
本虚拟实验室共设计了十个实验，内容涉及线性系统时域分析、线性系统的根轨迹、线性系统频域分析、线性系统串联校正、离散系统分析和非线性系统分析。
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