系统地研究了声子晶体中复杂的声波负折射现象。
Negative refractions of acoustic waves in sonic crystals have been studied in details.
同时，电磁波在光子晶体中的负折射现象也引起了人们的广泛关注。
At the same time, negative refraction of electromagnetic waves in photonic crystal has attracted much attention because of variety of novel phenomena.
并运用惠更斯作图法解释了电磁波由右手材料穿越左手材料时的负折射现象。
Using Huygens mapping method to explain the phenomenon of negative refraction when electromagnetic waves through the left-handed materials.
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