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.
This article makes a systematic study of the influences of the cocoon cooking and the quality of silk upon the compound assistants of the combination of the silicon solvent and penetrating agent.
本文就硅溶胶和渗透剂组成的复合助剂对煮茧质量、丝质的影响作了较为系统的探讨。
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The humic acid bonded silica gel has characteristics of larger penetrating capacity, high adsorbance per unit quality and high selectivity when it is used for solid phase abstraction.