难波

1

好的，让我们从另外一个方面来看，有时候很难想象这些波函数的组合。

All right . So , let 's look at this in another way , sometimes it 's hard to picture these waves combining .
2

实验结果表明，仅仅通过提高材料的磁导率而不注重材料的阻抗匹配问题，很难使电磁波进入到吸波体中，材料的微波吸收性能不会提高。

The results of the experiments show that only by increasing the permeability of the material without impedance matching problem is difficult to make waves into the absorber , and the material with high magnetic permeability will not increase the microwave absorption properties .
3

在场地波速测量中，由于噪声等因素的影响，很难准确识别P波、S波的初至时刻，致使波速结果存在很大的误差。

It is difficult to identify the arrival time of P and S waves in wave velocity logging , which yields great error for P and S wave velocities .