non-seismic region

• 不震区,非地震区

non-seismic region的用法和样例：

例句

1. According to focal mechanism,the directions of main press stress of the two are NNW in the seismic area but the fault plane solutions are different.
   震区的主压应力为北北西方向，两震的受力方向基本一致，但断层面解明显不同。