Dark lines and a narrow spontaneous line may be produced in isotropic PBG.

各向同性PBG中,自发辐射谱出现了暗线和窄的自发辐射线.

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A novel photonic band gap ( PBG ) structure is presented in this paper.

提出一种新型微带光子带隙结构.

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Performance Bond Guarantee: 2 % operative PBG to be issued by Seller.

履约保函: 由卖方开出[合同总金额的]2%有效履约保函.

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