At last, taking one earthquake as an example, this paper gives three dimension patterns of radius of the field with epicenter distance and azimuth as well as frequency.

最后，以一次地震为例，给出了孔径随震中距、方位角、频率变化的三维图象。

youdao

At last, taking one earthquake as an example, this paper gives three dimension patterns of radius of the field with epicenter distance and azimuth as well as frequency.

最后，以一次地震为例，给出了孔径随震中距、方位角、频率变化的三维图象。

youdao