单频的

Rayleigh Channel is the Doppler shift of the multipath channel and single-channel tracks of Matlab simulation program.

这是瑞利信道中有关多普勒频移的多径信道和单径信道的相关matlab仿真程序。

Among them 168 cases cut by high frequency instrument,accounting 60.43 percents.64 cases cut by radiofenqency instrument accounting 23.02percents.46cases cut by joint treatment accounting 16.55percents.conclusions it is a safe and effective methods to cure the peptic polyps by radiofrequency and high frequency under gastroscope.it is more effective than only using singal instrument and it decreases the occurrence rate of bleeding and fenestrate of alimentary canal.

内镜下射频及高频联合治疗消化道息肉是一种安全有效的方法，比单用效果更为确切，并降低了治疗后消化道出血和穿孔的发生率。

Hierarchical routing algorithms as well as the initialization and dynamic control of the network are provided.

其中包括路由算法、窄带单信道网络的初始化和动态控制及扩频通信网络的两种网络协议。

Motion controller composed of general chip series is developed and Quadruple differential circuit utilizing dual monostable multivibrators with Schmitt trigger inputs and dual 4_line to l_line data selectors or multiplexers is put forward.

本论文研制了一种常规芯片系列组成的运动控制器，采用单稳态多谐振荡器和数据选择器的四倍频辨向电路。

Utilizing Sylvester's theorem and Fourier series expansion method, commonly used in the spectral decomposition for matrix, the frequency response functions of parametrically excited system were derived theoretically and the external resonance condition was obtained.

采用矩阵谱分解中常用的Sylvester理论和Fourier级数展开法，推导了单自由度参数振动系统的频响函数，并得到了系统外激励共振条件。

Under the single-point excitation,the transient dynamic response curves in time domain and frequency-domain were calculated.

在单点激励的载荷作用下，计算了两种波纹管在时域和频域内的瞬态动力学响应。

Objective To study the effect of radiofrequency ablation on endocardial monophasic action potentials.

目的 探讨射频导管消融对心内膜单相动作电位的影响，为进一步完善RFCA的过程提供理论依据。

Results: There was significant difference in the haplotype of the 4 SNPs frequency between two groups.

结果：联合统计发现，PRODH基因的4个位点的单倍型频数两组分布差异有统计学意义(P05)。

RO_2·8% Y_2 O_3 was deposited by rf magnetron sputtering on NiCrAlY bond coat,thermal cyclingand fused salt effect experiments were made under the condition of 1100℃ room temperature 1100℃ cold water , and 900℃ room temperature,and were investigated by XRD and SEM,The results showthat ZrO_2·8% Y_2 O_3 deposited appears mainly as cubic and a little monoclinic phase and tetragonalphase.

将ZrO_2·8％Y_2O_3用射频磁控溅射技术沉积在NiCrAlY底涂层上，进行ll00℃→室温，1100℃→冷水和900℃→室温等热周期和熔盐作用的试验。随后进行X－射线衍射分析和扫描电镜（8EM）观察。结果表明，沉积态的氧化锆层主要为立方相和少量单斜相及四方相。

A new method for calculating the selected frequency and linewidth of the passive cavity of a pulsed dye laser is presented. Several typical cavities containing gratings, etalons and resonant reflector as frequency-selective elements are studied.

本文提出一种计算脉冲染料激光腔频率特性的新方法，并用以对包括有单光栅、双光栅、标准具和谐振反射器等选频元件的几种典型腔进行了研究。

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。