 |
我的日历 |
|
|
分类日志 |
|
|
友情链接 |
|
|
最新评论 |
|
|
搜索日志 |
|
|
访问计数 |
|
|
获取 RSS |
| |
 | |
|
方向性[Directivity] [2005-11-15] iamet 发表在 Ω〖物理〗
| The ratio of the maximum radiative power to the average radiation intensity of an antenna,
 where is the beam area, R is the antenna radius, is the wavelength of radiation, and A is the antenna area. | 学好数理化,走遍天下都不怕! | |
|
|