Solar sail spacecraft which is composed of four parts-sail film,structural booms,control boom,reaction wheel,and payload mass was studied.
针对由控制杆、反作用飞轮、有效载荷和太阳帆所组成的太阳帆航天器多体系统,从物理模型出发,利用拉格朗日方程建立了多体航天器的姿态动力学模型。
A solar sail spacecraft which is composed of four parts-sail film,structural booms,and payload mass,control vanes was studied.
针对由有效载荷、太阳帆和4个控制叶片所组成的太阳帆航天器系统,从物理模型出发,利用欧拉方程建立了姿态动力学模型,并通过数值仿真对太阳帆航天器基于控制叶片的对日定向性能进行了研究。
Dynamic model of solar sail spacecraft was established using Euler Equation.
针对由太阳帆薄膜、结构杆、有效载荷和四个控制叶片所组成的太阳帆航天器系统,从物理模型出发,利用欧拉方程建立了姿态动力学模型。
Development of the Sun Guide Telescope prototype for Space Solar Telescope
空间太阳望远镜太阳导行镜原理样机的研制
Study on the Auto Guide Unit System of One-meter Infrared Solar Telescope in Yunnan Observatory
一米红外太阳望远镜光电导行系统的研究
Analysis of the Feedback-Control System of the Auto Guide System of the 1m Infrared Solar Telescope of the Yunnan Observatory
1m红外太阳望远镜光电导行系统的反馈控制分析
Large sunglasses are one of the latest trends in fashion .
宽大的太阳镜是一种最新的流行时尚。
You can't go outside at all without sunglasses,
外出时，必须带太阳镜，
Where can I find sunglasses?
我在哪儿能买到太阳镜？
wore sunglasses to protect my eyes;
戴太阳镜保护我的眼睛；
You had better wear sunglasses in summer.
夏天你最好带太阳镜。
Take your compass and sunglasses.
带上指南针和太阳镜，
We wear T-shirts and sunglasses.
我们穿T-恤衫戴太阳镜。
They are Chen Feifei's sunglasses.
这是陈菲菲的太阳镜。
meniscus photoheliograph
弯月形透镜太阳摄影仪
He used a piece of tissue to clean his sunglasses.
他用一张纸巾擦太阳镜。
domeless solar refractor
无圆顶太阳折射望远镜
He looks very cool in sunglasses.
他戴上太阳镜真酷。
Eyeglasses to sunglasses in less than 60 seconds.
不到60 秒，便可由普通眼镜变成太阳镜。
Do you want to buy glasses or the sun glasses?
（1）、请问您是要配眼镜还是买太阳镜？
Study on lightweight beryllium mirror of space solar telescope
空间太阳望远镜中的轻量化铍镜研究