The third part is research design and methods.

第三部分为研究设计和方法。

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RESEARCH DESIGN and METHODS This was a double-blind, randomized, crossover trial.

研究设计与方法本研究为一项双盲、随机、交叉试验。

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Research design and methods: Cohort study involving 2499 patients with ACS recruited from 11 UK hospitals.

研究设计及方法：研究人群是来自英国11个医院的2499名患急性冠脉综合症的病人。

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Engineers,inventors, students and others come together to design and test different methods and materials for improving stoves.

VOA: special.2010.02.01

Extant design methods and component materials do not allow such up-scaling.

FORBES: Turn Baby, Turn - Offshore Wind Power Poised for Major Growth in U.S.

The IRS has identified millions of delinquent returns and has been pursuing a cross-functional National Non-Filer Strategy to identify non-compliant taxpayers and design methods to encourage their compliance.

FORBES: Non-Filers Beware: Who's That Knocking at Your Door ?

"The formula effect generally, and particularly in the case of clothing, is dependent not just on the choice of index but also on the characteristics of the price movements and levels being measured, sample design, choice of base period and price collection methods, " said its spokeswoman Jill Leyland.

BBC: Inflation: No change to RPI calculation