Comparative research of complication in perioperative period of single knee joint and double knee joint replacement.
单膝关节和双膝关节置换术围手术期并发症的对比性研究。
Methods: To adopt a random, double-blind and placebo comparative research.
方法：采用前瞻性随机双盲、安慰剂对照研究。
This article relies on the design of the Yunnan Biyun Bridge for single and double limb box high pier in detail the overall stability of a comprehensive comparative analysis.
本文依托云南碧云大桥的设计方案，对单、双肢箱型高墩进行了详细全面的整体稳定性对比分析。
Comparative research on the birefringence and the confinement loss of the proposed PCFs with single defect and double defects is presented.
阐述了所提出的单缺陷和双缺陷光子晶体光纤在双折射和约束损耗特性的对比研究。
Through comparative analysis with other countries and regions, it finds the problems of double-taxation, single tax incentives mode.
通过与其他国家的对比分析，认为我国尚未建立起针对不同创业投资主体的税收优惠体系的结论。
Methods The clinical studies with double blind and comparative method.
方法采取随机双盲对照临床研究。
Comparative digestibility of goats' vs. cows' milk fats in children with digestive malnutrition: a double-blind study.
比较消化率山羊与消化与营养不良：双盲研究儿童牛奶脂肪。
Comparative digestibility of goats' vs. cows' milk fats in children with digestive malnutrition: a double-blind study.
比较消化率山羊与消化与营养不良：双盲研究儿童牛奶脂肪。
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