查询词典 sailing launch

This paper focuses on the study of launch dynamics for self-propelled artillery. In order to exactly compute the motion of projectile in gun tube and the initial disturbance, the theory of two- phase flow interior ballistic is applied to the study on launch dynamics.

为了更加准确地计算火炮弹丸的起始扰动，将两相流内弹道应用于发射动力学研究。

Astrometry with new technologies created and is dedicated to the Space Telescope astrometric space orbit around the Earth observation and research on the scientific .1989 8 8, the European Space Agency launch astrometric Satellite Iba Valley satellite, which contains a 29 cm diameter reflecting telescope, four ground stations for data reception and analysis with the aim of space-based observations compiled by 120,000 to contain space for satellite measurement of star form, the location accuracy of ± 0002, parallax measurement accuracy ± 0002, on their own a year 0002, CDCDCD preliminary estimate of the above three data are now actual for the 0004,0003 and 0005; CDCDCD190 year in April the U.S. launch of the Hubble Space Telescope, containing 24 m diameter Wang C far mirror can work 15-20 years, 17-18 so you can measure the parallax of stars, are hundreds of thousands of stars of the measurement results.

伴随天体测量新技术而产生，是专门用于天体测量的空间望远镜在围绕地球的空间轨道上进行观测研究的科学。1989年8月8日，欧洲空间局发射天体测量卫星伊巴谷号卫星，它载有口径29厘米反射望远镜，4个地面观测站进行资料接收与分析，目的是要通过空间观测编出含星12万颗的空间测量星表，位置精度为±0002，测量视差的精度为±0002，自行为每年0002，CDCDCD现在初步估计上述三个数据实际为0004、0003和0005；CDCDCD190年4月美国发射哈勃空间望远镜，载有口径24米的望C远镜，可工作15—20年，可以测量出17—18等星的视差，得到几十万颗星的测量结果。

When you, or your company, want to launch a new product, or relaunch an existing product, to the market, what are the things you need to do to prepare for the launch?

61548；如果你的公司计划运作某个新产品上市（或者策划某个现有产品的重新上市），你都需要做好哪些方面的工作和准备呢？

Uusing ISRO's Geosynchronous Satellite Launch Vehicle MkIII rocket to launch the capsule, the organisation's chairman G Madhavan Nair says preliminary study work has been under way.

ISRO官员称，除了将满足印度航天局2015年载人太空飞行任务的需要，该发射台还将设计用来发射被提议的可复用运载火箭——印度梦想中的航天飞机。

In science and technology to achieve the first of the four, it is necessary to develop and launch China's first extraterrestrial objects and the landing detector detectors to inspect for the first time the use of the "Long March Route B" on the transfer of launch vehicle and spacecraft orbit for the first time The establishment and use of deep-space monitoring and control network for monitoring and control communications, for the first time to achieve a soft landing on the moon, the face on tour, the Spring River, and so the survival of a major breakthrough, carried out on tables topography and geological structure, mineral composition and chemical composition of the internal structure of the moon, the earth-moon Table on the environment and space exploration, and other activities supporting the basic completion of the lunar exploration engineering system.

在科学技术方面，实现四个第一，要研制并发射中国第一个地外天体着陆探测器和巡视探测器，第一次利用"长征三号乙"运载火箭发射地月转移轨道航天器，第一次建立和使用深空测控网进行测控通信，第一次实现月球软着陆、月面巡视、月夜生存等重大突破，开展月表地形地貌与地质构造、矿物组成和化学成分、月球内部结构、地月空间与月表环境等探测活动，建成基本配套的月球探测工程系统。

The national defence basic project as background and the dynamic model of cotrolled transfer matrix for multiple launch rocket was created in order to reduce the initial disturbance of rocket projectile. The causes that affect the angle change of orientation locator were analyzed by the engineering system dynamic theory base on multibody system transfer matrix method. The simulation of dispersion for multiple launch rocket was implementation, and the affect law between the angle of elevation and side deflection and the control parameters was acquired. The control module was installed on the orientation locator of multiple rocket launcher to control the initial disturbance of rocket that provide new method and theory base and show the engineering system dynamic base on the multibody system transfer matrix method is effective.

本文以国防基础科研项目为背景，建立了通过控制定向器角运动来减小火箭弹起始扰动的多管火箭受控多体系统动力学模型，应用基于多体系统传递矩阵法的工程系统动力学理论，进行了定向器角度运动的影响因素分析，进行了受控多管火箭炮发射动力学和密集度数值仿真，得到了定向器俯仰和侧偏角控制参数对俯仰角和侧偏角的影响规律，为在火箭炮定向器上加装控制集成模块控制火箭弹的起始扰动和射击精度提供了新思路和理论基础，也表明了基于多体系统传递矩阵法的工程系统动力学理论的有效性。

In order to satisfy the guidance task of Suborbital Launch Vehicle, based on the SLV s plane symmetry lifting body figuration, the SLV selects the straight slope formal attack angle, mending the guidance of Launch Vehicle.

为了更好地满足亚轨道飞行器的制导任务需求，基于亚轨道飞行器面对称的升力体外形，采用直线斜率形式的迎角变化规律，改进了现有的运载火箭制导方法。

Launch dynamics and transfer matrix method of multibody system are used to develop a launch dynamics model, equations of vibration characteristics and dynamic response. The firing dispersion test method of a non-full loading fire rocket based on the idea of equal initial disturbance is presented.

应用发射动力学和多体系统传递矩阵法理论，建立了多管火箭发射动力学模型，推导出了多管火箭振动特性和动力响应方程，形成了基于等起始扰动思想的多管火箭非满管射击密集度试验方法。

The launch site, testing system and ground application system have also been completed for launch.

在发射场上，测试系统与地面控制系统也完成了发射准备。

This paper, which focused on the structure optimization theory and method, has finished such studies as follows: The three dimension model has been built, which provide the necessary conditions for the building of the dynamics equivalent model. By the launch dynamics simulation, the loads of the key joints when the rocket is launched has been got, which provide the necessary data for the finite element analysis and the structure optimization. The finite element model of the excess weight parts of the rocket has been built, buy the finite element intension analysis of the model in two conditions, the displacement and the stress of the key points have been got, which make us know the distributing of the stress and the transmogrification of the part. To satisfy the intension and the precision design request and to decrease the weight of the part as many as possible, the part has been topology optimized by the structure optimization theory and method. After that, the new model has been analysis in structure and launch dynamics. The contrast of the character change of the old part and the new part and the influence on the rocket system have been studied.

本文以结构优化理论和方法为核心，主要做了以下工作：建立了某自行火箭炮全炮三维实体模型，为建立该火箭炮系统的动力学等效模型提供了必要条件，进行了发射动力学仿真，得到该火箭炮发射装置各关键连接部位在发射状态下的载荷，为有限元分析和结构优化提供了必需的数据；建立了该火箭炮发射装置超重部分的有限元模型，分两种工况，对模型进行了有限元强度分析，得出了关键部位的位移和应力值，对其的应力和变形分布有了具体的了解；运用结构优化的理论和方法，对该火箭炮发射装置超重部分进行了拓扑优化，使其在满足强度和精度的要求下尽可能多地减轻重量，对优化后得到的模型进行了结构分析和发射动力学分析，对比了该部件优化前后的特性变化以及对火箭炮系统的影响。

These are places without aristocratic baggage; egalitarian places open to talent, self-improving, engaged in learning and innovation through networks that were at once competitive and cooperative.

这些地方没有贵族遗风作祟，而且对于那些有天分的人是开放的平等之地，这些人善于通过那些曾经很具有竞争力与合作精神的关系网进行自我提高以及学习创新。

Christine: You don't want to see me?

你不想见我？