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方向基准
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  “方向基准”译为未确定词的双语例句
    As a type of angle measurement instrument, with high precision and high sensitivity, star sensor provides fiducial direction for guidance and navigation instrument of aircrafts.
    星敏感器作为一种高精度和高灵敏度的测角设备,为飞行器的制导和导航设备提供精确的方向基准
短句来源
    Star tracker is a sensing system with high accuracy and sensitivity in the guidance and navigation. It offers the direction reference to the aircraft and spacecraft by the use of the celestial stars.
    星跟踪器是高精度和高灵敏度的导航和制导用传感设备,它利用天上的恒星为系统提供方向基准
短句来源
    The data measured by magnetic sensor can be used in calculating the flight attitude of the projectile and giving the direction benchmark of firing pulse jet.
    地磁传感器测量的数据不仅用于解算弹体飞行姿态,同时可通过计算给出点火脉冲发动机选择的方向基准
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  directional reference
Conversely, the bees' ability to locate a food site was not disrupted in the absence of an external directional reference.
      
One is to use an external directional reference and continually reorienting with reference to it, while the other is to infer body rotations from internal sensory information only.
      
Thus, an external directional reference-some form of compass-is indispensable for ensuring progress away from home.
      
On the other hand, the choice for the x-directional reference velocity is completely arbitrary.
      


Star tracker is a sensing system with high accuracy and sensitivity in the guidance and navigation. It offers the direction reference to the aircraft and spacecraft by the use of the celestial stars. This paper describes simply the developments and applications of the star tracker, the hardware and software of the system and the technical parameters. The applications of the system are also simply presented here.

星跟踪器是高精度和高灵敏度的导航和制导用传感设备,它利用天上的恒星为系统提供方向基准。本文对星跟踪器的研制和应用作了简要的介绍,叙述了星跟踪器的软件和硬件的组成及其功能,综述了系统的技术参数。此外,还对星跟踪器在空间和陆基两种环境下的应用作了简单的说明。

The exploitation of oil and gas,manufacturing industry of industrial chemicals and chemical products and manufacturing industry of transport and communication facilities should be chosen as the leading industry for the development of Northeast China's traditional industrial base through studying and analysing the problems existed in the industry structures in the Northeast,the evidences of the adjustment of industry structures in the Northeast,the direction of the leading industry and the specific choice.

通过对东北老工业基地产业结构现状及其存在的问题、产业结构调整的依据以及主导产业选择的方向、基准与具体选择等方面的研究与实证分析,证明了在WTO背景下,石油和天然气开采、化工原料及化学制品制造业和交通运输设备制造业等应作为东北老工业基地优先选择发展的主导产业。

Trajectory deflection correction by miniature pulse thruster groups is an efficiency method of improving rocket projectile firing precision and reducing the scattering of impact point.The controllability of the impact point is significantly effected by the firing time of these pulse thrusters. And firing the correct jet at correct time is the key event in trajectory deflection correction.Based on the controlled trajectory model of rotating projectile,a strategy is presented on controlling firing time of pulse...

Trajectory deflection correction by miniature pulse thruster groups is an efficiency method of improving rocket projectile firing precision and reducing the scattering of impact point.The controllability of the impact point is significantly effected by the firing time of these pulse thrusters. And firing the correct jet at correct time is the key event in trajectory deflection correction.Based on the controlled trajectory model of rotating projectile,a strategy is presented on controlling firing time of pulse jet by using of magnetic sensor.The data measured by magnetic sensor can be used in calculating the flight attitude of the projectile and giving the direction benchmark of firing pulse jet.

采用小型脉冲推力器组修正弹道偏差是提高火箭弹射击精度,减小落点散布的有效方法。但脉冲推力器的点火时机对射弹落点的控制能力有很大的影响,如何从脉冲发动机组中选择点火是弹道修正过程中的关键环节。文中在旋转弹有控弹道模型的基础上,提出了一种借助于地磁传感器测量,来控制脉冲推力器适时点火的策略。地磁传感器测量的数据不仅用于解算弹体飞行姿态,同时可通过计算给出点火脉冲发动机选择的方向基准

 
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