查询词典 North Channel

Consequently the beam transmission problem is solved well. The general design curves of microwave plasma drift tube are developed by the theory and they can be used for development of the plasma microwave devices. Ion channel, as a important phenomenon in the interaction between electron beam and plasma, is first introduced into the study of PASOTRON, to replace the concept'plasma channel'used in general plasma microwave devices. A model is created to describe the channel performance. The channel is not stable, it is oscillatory and the oscillation frequency is larger than that of plasma.

作为电子束与等离子体相互作用的一个重要现象，本文首次将离子通道的概念引入到了PASOTRON的研究中，以区别常规的等离子体通道概念，并通过建立的模型推出离子通道并非一稳定规则的通道，而是具有振荡特性，振荡频率高于等离子体频率，推出了当满足一定条件时束外可能没有电子而成为纯的离子通道，这种状态对微波器件有重要的价值。

Based on the date of outcrop, log and lithology, sequence stratigraphic division and correlation were made on Neopaleozoic in south of North China Basin, and high-precision geologic correlation framework was built up in the basin.2. In the term of sedimentary features of Neopaleozoic in south of North China Basin, lateral variation of sedimentary facies was studied selectively in Benxi-Taiyuan Formation, Shanxi Formation, Lower Shihezi Formation, Upper Shihezi Formation and Shiqianfeng Formation. Lithofacies paleographic features and the sedimentary evolutionary process of Late Paleozoic in south of North China Basin were worked also.3. On the basis of sand-bodies Isopach figure drawing, the distribution of major reservoir sand-bodies of Neopaleozoic in south of North China Basin was studied. Basing on the distribution of sand-bodies in sequence stratigraphic framework, combining the development and distribution features of barrier and underwater distributary channel, there is a disquisition on the distribution regularity of pay reservoir sand-bodies of Neopaleozoic in this area.

以露头、测井和岩性资料为基础，对华北盆地南部上古生界进行了层序地层的划分与对比工作，建立了盆地范围内的高精度地层对比格架。2、根据华北盆地南部上古生界的沉积特点，按本溪组—太原组、山西组、下石盒子组、上石盒子组和石千峰组5个层组分别开展了沉积相的横向变化对比研究，并以此为基础探讨了华北盆地南部晚古生代的岩相古地理特征及其沉积演化过程。3、以编制砂体等厚图的方式研究了华北盆地南部上古生界主要储集砂体的平面展布规律，并以层序地层格架下的砂体展布研究为基础，从沉积体系控制下的砂体分布特点出发，结合障壁岛与水下分流河道的发育与分布特点，系统深入地开展了区内上古生界有利储集砂体的分布规律研究。

Based on summarizing the definition, characters, application and development trend of GIS and DEM, the thought and method of calculating channel volumes and channel evolution analyses with GIS and DEM technique are brought forward. Withthis technique, silt-deposit amounts of several regions for over one hundred years are calculated, which separately are South Branch, South and North Channel, mouth bar area, offshore and Hangzhou Bay, etc.

在总结GIS和DEM的定义、特点、应用及发展趋势的基础上，提出应用GIS和DEM技术计算河槽冲淤量和进行河床演变分析的思路和方法，基于这一手段，首次将整个长江口和杭州湾作为研究对象，对其各组成区域在同一时间背景下的冲淤量进行了全面系统的分析，力求提供有关长江口及杭州湾百余年来平均冲淤状况全貌的认识。

The Nordwand , German for "north face", is the spectacular north (or, more precisely, north-west) face of the Eiger (also known as the Eigernordwand ,"Eiger north face"). It is one of the six great north faces of the Alps , towering over 1,800 m (5,900 ft) above the valley in the Bernese Oberland below.

少女峰铁路的隧道段就是建筑在艾格峰内，隧道段有两个站，艾格石壁和冰海站，站内有玻璃观景窗，看出去正是艾格峰冰河的辽阔视野。

The study result indicates that the most suitable subzone for ecotourism exploitation distributes from the east of Nantianmen to Xiheizui in Zhouzhi county, from the north of Fangyangsi to Dacha and from the north of Dadian to Xiangshuishi in Mei county, which is 17.298 percent of Taibai Mountain Nature Preserve; the moderately suitable subzone(16.64%) distributes in north slope of Taibai Mountain in west of Taibailiang; the suitable subzone(27.68%) distributes from Taibailiang, Laomiaozi to Longdonggou, and disperses in north slope of Taibai Mountain; the marginal suitable and unsuitable subzone(16.64%) distributes from east Taibai Mountain, Baxiantai to Paomaliang, and from Aoshan Mountian to the north and east of Yaowang temple.

研究结果表明：太白山自然保护区最适宜发展生态旅游的面积占保护区的17.298％，主要集中在周至县境内的南天门以东至西黑嘴，眉县境内的放羊寺以北至大岔和大殿以北至响水石；中等适宜的面积占38.387％，主要集中在太白梁以西的北坡地区；一般适宜的面积占27.677％，集中分布于太白梁——老庙子——龙洞沟一带，在北坡分布比较分散；不太适宜和不适宜的面积占16.640％，主要集中在东太白山——拔仙台——跑马梁和鳌山——药王庙以北、以东地段。

Those semidiurnal tidal waves which affect the Taiwan channel come respectively from the south and the north entrance of the channel, and the north one is stronger than the south's.

最强潮流区位于澎湖水道，M2 分潮最大潮流达 1 96cm/s。环台湾岛海域潮波潮流水平结构上除海峡北部原有一个圆流点外，还发现另外存在 4个新的圆流点。

Our territory for the four-terminal : in the most eastern Heilongjiang and Wusuli the centerline of the main channel of the intersection (135 ° E), an the most western end near the Pamirs (73 ?E), things are about 5,000 km. in the south Cengmuansha (4 ?N), the most northern end of Mohe in the north of the main channel of the Heilongjiang Center Line (53 ?N), North and the South are about 5,500 km.

我国领土的四端为：最东端在黑龙江和乌苏里江的主航道中心线的相交处（135篍多），最西端在帕米尔高原附近（73篍），东西相距约5000千米，南端在曾母暗沙（4篘）、最北端在漠河以北黑龙江主航道的中心线上（53篘）多，南北相距约5500千米。

England is bordered by Scotland to the north, Wales to the west and the North Sea, Irish Sea, Celtic Sea, Bristol Channel and English Channel.

英格兰北部是以苏格兰作为边界，西部以威尔士，北海，爱尔兰海，凯尔特海，布里斯托海峡和英吉利海峡作为分界。

The unit connects to the elevator channel, aileron channel, and an auxiliary channel.

单位连接到电梯通道，副翼通道和辅助通道。

Begin from the chapter three, this text expound the fact of the algorithms that the channel estimation mainly, first of all, this text has been introduced and the important function of the channel estimation algorithm of Orthogonal Frequency Division Multiplexing ,on this basis, this text Introduce the detailed introduction of the channel estimation algorithm, also essentialing structure.

从第三章开始，本文主要论述了信道估计的算法。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。