围绕“碰撞空域”的较大圆柱形叫做“保护空域”(PAZ)，其大小在航程的不同阶段根据碰撞风险而改变。

The larger cylinder, which surrounds the CAZ, is the Protected Airspace Zone (PAZ). It changes in size during the different phases of a flight, according to the risk of a collision.

youdao

围绕“碰撞空域”的较大圆柱形叫做“保护空域”(PAZ)，其大小在航程的不同阶段根据碰撞风险而改变。

The larger cylinder, which surrounds the CAZ, is the Protected Airspace Zone (PAZ). It changes in size during the different phases of a flight, according to the risk of a collision.

youdao