查询词典 navigation act

However, keywords can only represent the simple content, which easily dissever the relevancy of the content The deep-content representation and application are not developed, so semantic navigation is not satisfied at present. Time mechanism is a kind of navigation mechanisms that uses time for the signpost, and determines navigation route according to the time of occurrence.

时序机制指以时间为导航路标、根据事物发生的时间顺序确定访问路径的一种导航机制，主要应用于WWW信息空间中以时问顺序为线索组织信息的结构中；空间机制指依据对象间的空间关联，为用户指引路径，提供导航路标的机制，应用于具有空间特征的结构中；社会机制指利用先行者的经验、建议为后来者指引路径的行为，原来主要应用在推荐系统、协作系统中，目前已经在主流的信息检索系统中得到了应用，如在CNKl知识网络服务平台（CNS 5.0）中的应用。

Strapdown inertial navigation system is a kind of very advanced inertial navigation technology,and it is the developing direction of inertial navigation.

捷联式惯性导航系统是一种十分先进的惯性导航技术，是近年来惯性技术的一个发展方向。

Strap-down inertial navigation system is a kind of advanced inertial navigation technology, which is the developing direction of inertial navigation.

捷联式惯性导航系统是一种先进的惯性导航技术，是近年来惯性技术的一个发展方向。

This article has first analyzed the GPS localization navigation principle, in view of its un- voluntary navigation flaw, the analysis has compared the performance of many kinds of assistant navigation system, determined use Dead Reckoning system, composed of electronic compass and milemeter, to complete the auxiliary localization function, when GPS abated. This scheme could get a satisfying short-time precision, and its cost was low.

本文首先分析了GPS定位导航原理，针对其非主动式导航的缺陷，在分析比较了多种辅助导航系统的性能后，采用"电子罗盘+里程计"的DR航迹推算系统来完成GPS失效时的辅助定位，该方案能保证短时精度，且成本低廉。

Damsite selection of Yilan Navigation Hydro- junction on Songhuajiang River;2. Study on the general layout scheme for reinforcement and extension project of Guoyang junction sluice;3. The river reach of Dadingzishan Navigation-power junction engineering is characterized by wide grade II terrace,large distance between the two dikes,thick covering of river bed,and strong movability and permeability of riverbed,and the overall layout is the essence of construction of low-head navigation-power junction on the reach.

松花江大顶子山航电枢纽工程河段具有Ⅱ级台地宽、两岸堤距大、河床覆盖层厚、河床质可动性及渗透性强等特点，该河段兴建低水头航电枢纽工程其总体布置是关键，利用正态物理模型(11∶00)及遥控自航船模等研究手段，对大顶子山航电枢纽工程预可、工可、初步设计及施工图设计等阶段枢纽总体布置进行了多方案比选，提出枢纽主要建筑物布置：自右岸依次为船闸、10孔泄水闸、电站、28孔泄水闸及土坝。

Is a series of aids to navigation light LED lamps high-tech enterprises, which uses advanced LED series light source to replace the domestic aids to navigation lighting products are still using the traditional tungsten halogen light source or other traditional source of lighting, making China's aids to navigation lights product quality to meet international advanced level.

深圳市锐步科技有限公司是一家研发LED光源系列助航灯具的高新技术企业，它采用先进的LED系列光源取代国内助航灯光产品中仍在使用的传统卤钨光源或其他传统光源的灯具，使得我国的助航灯光产品质量达到国际先进水平。

ABSTRACT: The UAV navigation system's performance is improved through embedding the geography information model that can process the vector map data in the system by using MapX, In this paper, how to navigate and plan the UAV flight course in the vector map is investigated. The basic control and operation for vector map in the geography information system is introduced, and the flight course is designed and modified in the map. In addition, 2D vector map can't orient UAV in 3D space, so the altitude model is added in the UAV navigation system to realize 3D orientation by integrating 2D vector map with altitude plot. The simulation results in the UAV simulation system indicate that the navigation system can monitor and control UAV efficiently and intuitionally.

使用MapX在无人机导航系统中添加能够处理矢量地图数据的地理信息模块，可以显著地提升系统的性能；文章对如何在矢量地图下进行无人机导航与任务规划进行了研究，完成对地理信息系统中矢量地图的基本控制和操作，并在地理信息图上进行航线的设定与修改；另外，针对二维矢量地图无法对无人机进行三维空间定位的问题，文章通过在无人机导航系统中添加高度位置显示模块，用二维平面地图与高度图相结合的方式来实现对无人机位置的三维定位；通过在无人机仿真实验系统中的使用，证明了该系统能高效、直观地对无人机飞行进行监视与控制。

Based on the different features of HModulated gyro monitor inertial navigation system,electric navigation chart and bathometer,this paper presents an integrated HMGMINS/ENC/BM navigation system.

根据H调制陀螺监控惯性导航系统、电子海图以及测深测潜仪的不同特点，提出了一种HMGMINS/ENC/BM组合导航系统。

Based on the integrated inertial navigation system mainly consisting of inertial navigation system and electrostatically supported gyro monitor,mathematical and hardware-in-the-loop simulation in the course of the development of the integrated navigation system is discussed in this paper.

文摘：本文以用惯性导航系统和静电陀螺监控器为中心的综合惯性导航系统为背景，讨论了综合导航系统研制过程中的数学和半实物仿真技术。

In any river, lake, reservoir and canal: discarding or piling objects impedimental to flood passage and navigation, or planting trees and growing crops of long stalk variety impedimental to flood passage; and in any navigation channel: abandoning sunken vessels, laying fishing implements impedimental to navigation, and cultivating aquatic plants

一在江河、湖泊、水库、渠道内弃置、堆放阻碍行洪、航运的物体的，种植阻碍行洪的林木和高杆作物的，在航道内弃置沉船，设置碍航渔具、种植水生植物的

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48