As for SHG, we show that the efficiency of SHG in PBG can be greatly enhanced if the phase match condition is met.

理论分析和数值计算表明：相位匹配条件满足的情况下，光子晶体(PBG)中的二次谐波的产生的效率和增强会大大提高。

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The ideal transformers in a network equate mode match condition of the interface between the isotropic and biaxial medium.

在网络中使用理想变压器元件等效双轴电介质与各向同性介质分界面处的场匹配条件。

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The SMVC theory get extensive attention because of its completely robustness to the parameters change and external disturbances which meet the match condition.

由于滑模控制系统的滑动模态对满足匹配条件的参数变化与外部扰动具有完全鲁棒性，因而受到了广泛重视。

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"People from ethnic minorities need to come forward and to help children such as Zain in the hope that they may be a tissue match and actually cure his condition and save his life, " he said.

BBC: NEWS | Health | Boy wants minority marrow donors

"He is not in the right condition to contest a match of the intensity of a quarter-final, " Ruiz-Cotorro explained.

BBC: Nadal handed bye into semi-finals

Preimplantation genetic diagnosis (PGD), the technique used to see if an embryo is a match, is legally permitted now if a genetic condition is present in a family.

BBC: Embryology Bill: The key points