这些参数对微波无源接力站的设计、安装以及性能估计是很有用的。

These parameters are very useful in the design, installation and estimation of capability for microwave passive radio relays.

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2008年，我在北京奥运会火炬接力活动的长野站中担任火炬手，并在北京奥运会开幕式上以旗手身份率领日本代表团入场；

In 2008, I was the torch bearer for the Nagano leg of the Beijing 2008 Olympic Games torch race and the flag bearer for the Japanese national team at the opening ceremony.

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通过用户站的多级接力，中心站可以和每一个用户站进行通信。系统硬件简单，占用频率资源少，成本低。

With the help of some users' multi -level relay, the center station can communicate with each user int he system.

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