较弱的

A spherically symmetric structure of the earth has been assumed.

人们把地球的构造假设为球状对称。

Under the limitative temperature, the bending angle is increased with the increase of laser power and decreased with the increase of scanning velocity and laser spot.

在限定的温度条件下，弯曲角度随激光功率的增大而增大，随扫描速度和激光光斑的增大而减小。