目的引入声调因素，运用功能磁共振成像技术进一步研究汉字规则性效应的脑激活模式。
Objective To investigate activation patterns of Chinese character tone processing by using functional magnetic resonance imaging (fMRI).
结论在穿透性角膜移植术中应用非接触性、无热效应的准分子激光制作植床，可提高环钻质量，减少移植片表面的不规则性，使手术效果得到改善。
Conclusion Noncontact and nonthermal excimer laser penetrating keratoplasty can promote the quality of trephination, reduce the irregularity of grafts, and improve the effects of the operation.
结论在穿透性角膜移植术中应用非接触性、无热效应的准分子激光制作植床，可提高环钻质量，减少移植片表面的不规则性，使手术效果得到改善。
Conclusion Noncontact and nonthermal excimer laser penetrating keratoplasty can promote the quality of trephination, reduce the irregularity of grafts, and improve the effects of the operation.
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