论文分析了通信卫星模型和链路模型的特点，阐述了模型设计的主要思路。

The paper analyses the characters of communication satellite model and communication link model and expatiates the main idea of model design.

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用来挂在学校教室的行星图片装饰着会议室的大门，卫星模型占据着屋子一角。

Schoolroom pictures of the planets decorate the door to the meeting room. Satellite mock-ups occupy a corner. Mr.

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模型和卫星传感器都使用红外能量来进行云的估算。

Both the model and the satellite sensor use infrared energy to measure clouds.

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