T EM observations indicate that the dislocation density is very low in the ELO reg ion.

透射电子显微镜的观测表明在ELO范围内位错密度很低.

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Objective To investigate the effectiveness of emergency laser operation ( ELO ) for acute hemorrhoidal disease.

目的　总结急性 痔 病急诊激光手术的疗效.

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Cross - sectional TEM reveals that the threading dislocation ( TD ) density in the ELO - GaN region is significantly reduced.

透射电子显微镜 ( TEM ) 的研究结果表明,横向外延区域GaN的位错密度明显减小.

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