The SNR, the antenna condition and the Bragg condition as well as achromatism in optical design are discussed.
讨论了在光学设计中的信噪比要求，天线条件，色差兼容和布喇格条件。
When a volume holographic grating is readout under off-Bragg condition, determining the direction of the diffracted beam is an important issue in the coupled-wave theory of volume gratings.
体全息光栅的读出偏离布拉格条件时，衍射光方向的确定是体光栅耦合波理论中的一个重要问题。
The result on site monitoring shows that the smart Fiber Bragg Grating bars can monitor the stained condition of cables effectively.
现场监测结果表明，光纤光栅智能索能有效监测拉索索力。
The result on site monitoring shows that the smart Fiber Bragg Grating bars can monitor the stained condition of cables effectively.
现场监测结果表明，光纤光栅智能索能有效监测拉索索力。
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