查询词典 modulation

Methods. PSF 1000 analyzer was used to measure retinal image quality for eye of 26 subjects (spherical ranged from –3.00 ~-6.00Ds, astigmatism ranged from –0.75~-3.00Dc) fitted with three forms of full correction in random order : unaided eye, with rigid gas permeable contact lenses and toric soft contact lenses. The modulation transfer function curve was observed, 12 points of the MTF curve ( equivalent 12 points of LogMar VA) was used for analysis. Results.

利用人眼点扩散函数分析系统（PSF-1000）检查和评估26例近视散光患者（年龄18~28岁，球镜–3.00DS~-6.00 DS，角膜散光-0.75DC ~-3.00DC）在裸眼、配戴散光软性角膜接触镜和透氧性硬性角膜接触镜三种全矫状态的光学成像质量，采用26眼屈光介质MTF曲线中的12个点（即分别等同于对数视力表4.0~5.1的12个点）进行比较和统计学分析，为了避免主观误差，三种矫正方式的先后顺序随机选择。

00Ds, astigmatism ranged from ?0.75~-3.00Dc fitted with three forms of full correction in random order : unaided eye, with rigid gas permeable contact lenses and toric soft contact lenses. The modulation transfer function curve was observed, 12 points of the MTF curve ( equivalent 12 points of LogMar VA) was used for analysis. Results.

3.00DS~-6.00 DS，角膜散光-0.75DC ~-3.00DC）在裸眼、配戴散光软性角膜接触镜和透氧性硬性角膜接触镜三种全矫状态的光学成像质量，采用26眼屈光介质MTF曲线中的12个点（即分别等同于对数视力表4.0~5.1的12个点）进行比较和统计学分析，为了避免主观误差，三种矫正方式的先后顺序随机选择。

It was found that SO2 derivatives increase the amplitude of IA in CA3 neurons, and inhibit the inactivation of IA. After SO2 derivatives application, normal sensory physiology of hippocampal neurons was affected. This variation caused by SO2 could underlie the toxical modulation of sensory input to the central nervous system.

说明SO2代谢衍生物可增大大鼠海马CA3区神经元IA电流，延长A-电流的失活时间，从而影响海马神经元的膜生理感应，这可能是SO2影响神经细胞功能的机理之一。

This research would lay a foundation for further investigating the transcriptional modulation of rabbit preimplantation embryo development.

这些基因的克隆将为进一步研究兔的植入前胚胎发育模式奠定基础。

He activities of metalloproteinases are tightly controlled at several different transcriptive levels such as modulation bycytokines, growth factors and hormones.

IMPs是一组多功能因子家族，能特异性地抑制MMPs活性。生理条件下产生的TIMPs对正常ECM的改建和维持组织器官功能具有作用。

An optical packet exchanger is provided which, in a situation where a transmission path for an optical packet is to be switched by using an address signal, prevents the transmittable capacity for the information signal from being decreased, and which facilitates the extraction of the address signal even if the modulation speed for the information signal becomes high.

提供了一光分组交换器，在一种情况下通过使用一地址信号来交换光分组的传输路径，防止信息信号的可发送容量降低，并且即使在信息信号的调制速度变高时，也便于提取地址信号。

The main works include: The topology structure and the switching function of the TSMC,the widely employed space vector modulation strategy without zero vector at rectifier stage and the transrectification of the TSMC were introduced.

论文的主要工作包括：介绍了TSMC的拓扑结构和开关传递函数、目前普遍采用的整流级无零矢量的空间矢量调制策略以及TSMC的换流。

Three approximate methods (called as scaling, rectangle and trapezia methods respectively) for performance analysis of orthogonal space-time block code with M-ary phase shift keying and M-ary quadrature amplitude modulation over flat Rayleigh fading channels are proposed, and their approximate performance expressions are given.

在平坦瑞利衰落信道下，提出了3种正交空时分组码在MPSK和MQAM调制下的近似性能分析方法(分别称为放缩法、矩形法和梯形法)，并给出其近似表达式。

Three approximate methods (called as scaling, rectangle and trapezia methods respectively) for performance analysis of orthogonal space-time block code with M-ary phase shift keying and M-ary quadrature amplitude modulation over flat Rayleigh fading channels are proposed, and their approximate performance expressions are given-The analysis of approximate results shows that OSTBC can obtain full diversity orders.

在平坦瑞利衰落信道下，提出了3种正交空时分组码在MPSK和MQAM调制下的近似性能分析方法（分别称为放缩法、矩形法和梯形法），并给出其近似表达式。通过对近似结果的分析，OSTBC能获得满分集增益。

An efficient Sphere Decoding algorithm is proposed for uncoded Multi-Input Multi-Output systems with a large number of antennas and higher modulation constellations. This method utilizes a channel-based group detection strategy.

摘要该文针对无编码的多输入多输出无线通信系统中的最大似然检测接收机在发端天线数较多、调制阶数较高时计算复杂度过高的问题，提出了一种低复杂度的球形译码算法。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。