弯向 meaning in English
change of curvature sign
Examples
- Some of the radiation was bent slightly toward the negative pole .
一些射线稍稍弯向负极。 - They made the river bend toward this direction
他们使河道弯向这方 - Like the radar image on the left , under certain weather conditions e . g . when the air is stable , the microwave from radar which would otherwise travel in a straight line might bend towards the ground
以左边的雷达图像为例，在某些天气状况下例如：当大气处于稳定状态时，雷达发出的微波会偏离直线前进的路径，而弯向地面。 - Like the radar image on the left , under certain weather conditions ( e . g . when the air is stable ) , the microwave from radar which would otherwise travel in a straight line might bend towards the ground
以左边的雷达图像为例，在某些天气状况下(例如：当大气处于稳定状态时) ，雷达发出的微波会偏离直线前进的路径，而弯向地面。 - This means that the dielectric property changes with height and allows a slight increase in the speed of a radio wave as we move upwards through the atmosphere . this in turn means that if a radio wave moves away from the earth at an angle less than 90 degrees , then the upper part of the wave travels faster than the lower part . therefore even under normal conditions this can in effect bend , or refract , the wave back down to earth
其中一种显著的现象是：在一定的气象条件下，在大气边界层尤其是在近地层中传播的电磁波，受大气折射的影响，其传播轨迹弯向地面，当曲率超过地球表面曲率时，电磁波会部分地被陷获在一定厚度的大气薄层内，就好像电磁波在金属波导管中传播一样，称为大气波导传播，形成波导传播的大气薄层称为大气波导层。