但当断层的深度加大或断层延伸范围变小时，实际的模型与二度体模型的假设差别较大，致使反演结果误差较大，难以适应实际问题的需要。
But if the depth and extension of the fault increase, the inversion results will have a bigger error because the 2d model is not fit for the real fault.
改进后的算法在选择操作时，采取了精英个体保留策略和锦标赛方法，扩大染色体的选择范围，加大了适应度好的染色体被选中的概率；
Elitism and 2-tournament selection are used to expand the selection of chromosomes, so that the ones with better fitness have more chances to be selected.
利用遗传算法进行问题求解，给出染色体编码方案和适应度函数，设计并实现了排课系统。
The author gives an genetic algorithms solution to the problem, and then provides the chromosome coding schemes and fitness function to design and realize the course scheduling system.
二是改变目标和背景辐射温度对比度，提出了毫米波自适应隐身技术，该隐身技术能自动调整目标的毫米波辐射，使目标和背景融为一体。
It can be carried out with millimetre wave smoke and millimetre wave chaff… Another is one that change the rato of the temperature about to the target and backdrop radiation. Present…
二是改变目标和背景辐射温度对比度，提出了毫米波自适应隐身技术，该隐身技术能自动调整目标的毫米波辐射，使目标和背景融为一体。
It can be carried out with millimetre wave smoke and millimetre wave chaff… Another is one that change the rato of the temperature about to the target and backdrop radiation. Present…
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