It was widely recognized that further comparison studies should be done between new techniques and conventional ones in clinical application.

新技术与传统技术在临床上的应用还需要更多的比较研究。

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Several studies have evaluated the various modalities for DVT prophylaxis, and comparison studies have stratified the risks and benefits for each option.

已经有研究对各种不同DVT预防方案作了评估，并有对比研究将每种方法的收益与风险作了分层分析。

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From micro aspect, I make comparison studies of parent kinship terms, which are the most important and typical aspects of kinship terms, and summarize three general features.

从微观角度，对亲属称谓中最重要、最具代表性的父母称谓进行了对比，总结出了三大总体特征。

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Armed with photographs and records from the original expedition, Schaller and a group of graduate students conducted comparison studies to look for signs of climate change.

NPR: 50 Years On, a Passion for the Wild Endures

Newton cautions that this is an apples to oranges comparison, because the Zocor studies were done with arteries in the neck, not the heart, and more tests are being done to see if ETC-216 reduces plaque in the neck.

FORBES: A Big Win For Esperion

The Danish study is prospective in nature, which distinguishes it from most other studies on the health effects of cell phone use, which were case-control studies and enrolled subjects diagnosed with brain tumors and a comparison group of subjects who were free of brain tumors in order to compare reported cell phone usage in the two groups.

FORBES: Do Cell Phones Cause Brain Cancer? The Diehards Cling Desperately To Opinion