The Kerr nonlinearity of a left-handed material is analyzed in a four-level atomic system.

分析了四能级原子系统中左手材料的克尔非线性特性。

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The characteristic equations of the guided modes in a uniaxially anisotropic left-handed material slab waveguide are derived.

推导了单轴各向异性左手平板波导的导模特征方程。

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We investigate guided modes in the asymmetric waveguide structure with a left-handed material (LHM) layer surrounded by air and metal.

本文调查左手材料作为导波层、空气和金属作为包覆层的不对称左手材料波导的导模特性。

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At the review it also emerged that certain British government departments have not yet handed over material relevant to the inquest which was requested in January.

BBC: Alexander Litvinenko inquest 'may look at MI6 role'

By reading through thousands of diaries and autobiographies, the kind of archival foot-slogging which some cultural theorists are apt to avoid, Mr Rose has found persuasive evidence that, far from being passive consumers of material handed down by their masters, working-class audiences were sharp and active critics.

ECONOMIST: Cultural history

Where print material is handed to me I forward it (as on this occasion) with other overnight work completed on tape.

BBC: NEWS | UK | Politics | Blunkett responds to two inquiries