查询词典 channel iron

Multiple-channel percutaneous nephrolithotomy was carried out for 38 cases of staghorn or multiple renal calculi,of which 32 were treated via bi-channel approach while the remaining 6 via tri-channel approach.68 times of lithotomy were performed with the stone clearance rate above 84%.

总结1990～1996年38例鹿角形或多发性肾结石病例，采用经皮肾多通道穿刺取石方法，共作双通道穿刺取石32例，三通道穿刺取石6例，取石68次，疗效满意，结石清除率达84％以上。

The present invention relates a method and apparatus for receiving signal in MIMO CDMA system, charactered in that: on transmitting side, transmit signal by at least two antennas; on receiving side, receive at least one antenna, and obtaining channel paraneters by estimation of channel, using the channel parenters and maximum likelihood principle into MIMO+CDMA system, solving the problem of receiving signal in multiple mobile environment in effect.

本发明为一种基于MIM0 CDMA的接收方法及装置，其特征在于，发射端：至少采用两个发射天线发射信号；接收端：至少采用一个接收天线接收发射天线发射的信号，并且通过对信道的估计获得信道参数，采用该信道参数和最大似然原理的步骤得到输出信号。本发明将ML原理应用于MIMO+CDMA系统中。

O protocol, focusing on the Physical Layer and Mac Layer Specifications of the protocol.Chapter II analyze the channel character of the power line communication channel, constructs a system model taking consideration of power line channels and the channel estimation algorithm based on pilots are investigated.

第二章分析了电力线载波通信信道特性，重点在于针对相应的信道特性对信道进行建模并，给出电力线信道下的信道估计方法和仿真结果。

So it holds a ideal ability to anti-interference and has 2 scalar level resolution in location and measuring velocity than traditional radio induction technology. And the channel composed of the new radio induction system for communication is different from the parameter-constant channel and the traditional parameter-changing channel, its parameter is decided by the mutual induction between its antenna and induction-cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter.

而且，由新型无线感应系统组成的信道既不是恒参信道，也不是一般目前所知的变参信道，其信道传递函数的幅值只与信号的频率有关，与系统中天线和感应电缆之间的互感和天线的位置有关，而与时间无关，其信道传递函数的相位只与天线的位置有关，而与时间无关，由新型无线感应系统组成的信道是一种不随时间变化的新型变参信道。

Ida nadi is the channel for mental energy; pingala nadi is the channel for vital energy and sushumna nadi is the channel for spiritual energy.

左脉是神经能量的通道，右脉是是生命能量的通道。中脉是精神通道。

If there is a dispute between a channel user and any one or more of the Channel Operators, the decision of the Channel Operator will take precedence.

如果有一个用户和渠道之间的任何一个或多个频道商，该频道运营商决定将优先更多的争议。

The numerical results of river channel planform change, longitudinal bed profile, channel cross section, water surface profile and channel sediment transport are analyzed and discussed.

根据模拟得到的河道平面形态、横断面形态、河床纵剖面，沿程水面线及沿程输沙率的变化，分析了河床初始比降、入口含沙量、流量和河岸抗冲性等各种因素对河型转化的影响。

Company to operate the noise and vibration measurement and analysis equipment, including from a simple integral sound level meter, single-channel real time analyzer, dual-channel real-time multi-channel analyzer to the interactive analysis system, the artificial head recording and playback system.

公司经营的噪声与振动测量分析仪器包括从简单的积分式声级计、单通道时实分析仪、双通道实时分析仪到多通道互动式分析系统、人工头录音和回放系统。

A method form obtaining IP address of maintenance channel includes judging whether ATM address is included in preconfigured IPOA PVC data of base station controller or not by BSC according to ATM address in BOOTP request message, returning BOOTP response message back to base station if it is or otherwise returning failure message back to BOOTP, carrying out judgment on each parameter in BOOTP response message by BS as per preset parameter rule, utilizing all parameters to set up IPOA channel when all parameters are consistency with said rule and required transmission bandwidth of IPOA channel is less than bandwidth limitation of maximum transmission.

本发明提供一种维护通道IP地址的获取方法以及修改方法，包括：在基站控制器侧预先配置基站的维护通道IPOA PVC数据，该IPOA PVC数据包括该基站的ATM地址；该基站在专用的PVC上发送BOOTP请求消息，该BOOTP请求消息中包括该基站的ATM地址，并且同时启动超时定时器对第一时间间隔计时；基站控制器根据该BOOTP请求消息中的ATM地址，判断基站控制器中预先配置的IPOA PVC数据中是否包括该ATM地址，若包括，则向该基站返回BOOTP响应消息，该BOOTP响应消息包括关于维护通道IP地址的参数，否则返回BOOTP失败消息；基站根据预定参数规则，对该BOOTP响应消息中的每一参数进行判断，在所有参数符合预定参数规则、且建立该IPOA通道所需传输带宽小于最大传输带宽限制的情况下，利用该所有参数建立IPOA通道。

This paper presents a theoretical analysis of time-hopping pule position modulation ultra-wideband communication system under time-varying channel condition. The effect of scatters movement is analyzed under indoor channel condition with different channel parameters by simulation.

分析了时变信道环境条件下TH-PPM-UWB系统的性能，并通过计算机仿真研究了室内信道环境中，散射体移动对不同参数条件下系统性能的影响。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。