目的观察置入气管支架对良恶性气管狭窄的治疗效果及不良反应。
Objective To observe the therapeutic and side effects of tracheal stents in tracheal stenosis caused by tracheal malacia and malignant tumours.
格兰姆斯说，二氧化钛本身在紫外线下就是催化这个反应的良催化剂。
On its own, titania works best as a catalyst for this reaction in ultraviolet light.
甲醇为反应的良溶剂；
Methyl alcohol was found a suitable solvent for the reaction.
NMR弛豫参数对结构变化的反应在良溶剂中比在不良溶剂中敏感。
NMR relaxation parameters are more sensitive to the variation of structure in good than in poor solvents.
NMR弛豫参数对结构变化的反应在良溶剂中比在不良溶剂中敏感。
NMR relaxation parameters are more sensitive to the variation of structure in good than in poor solvents.
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