结果：反应主要控制在单甲基化阶段，且通过适当的后处理方法，可得产物含量较高的固体纯品。
METHODS Phase-transfer catalytic methylation and suitable method of aftertreatment were used. RESULTS The yield and content was both improved.
目的探讨经单鼻孔蝶窦入路切除垂体瘤的显微手术技巧及术后处理。
Objective To study the operative procedure and postoperative treatment of removing pituitary adenomas by endonasal transsphenoidal approach with microsurgery.
研究了系列不同掺杂、不同掺杂浓度、单掺杂和双掺杂以及不同后处理态（生长态、还原态和氧化态）铌酸锂晶体的透过率光谱和光折变二波耦合效应。
The experimental results show that the optical transmission spectra range and two-wave mixing gains are smaller in the high doped LiNbO_3 crystals.
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