Reflection of EM waves 电磁波定向反射
These unusual properties generally have to do with manipulating electromagnetic (EM) or acoustic waves; in this case, it is EM waves in the infrared spectrum
这些与众不同的性质一般都与控制电磁波或声波有关；在这种情况下，电磁波是处于红外波段的。
Engheta and Vakil's interest in graphene, however, is due to its capability to transport and guide EM waves in addition to electrical charges and the fact that its conductivity can be easily altered.
但是Engheta和Vakil对石墨薄膜感兴趣的原因却是它有运输和引导电磁波和电荷的能力，以及石墨薄膜的导电率易被改变的事实。
The complex ray theory provides a simple and useful approach to analyze the propagation and scattering of HF EM waves in various complicated environments.
复射线理论为高频电磁波在各种复杂环境中的传播和散射提供了一种简便而有效的分析方法。
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