DESIGN: a random control study.
设计：随机对照研究。
设计：病例-对照研究。
设计：前后对照研究。
设计：对照实验研究。
方法断面对照研究。
DESIGN: a randomized control study.
设计：随机对照研究。
DESIGN: Randomized case control study.
设计：随机对照研究。
DESIGN: A retrospective control study.
设计：回顾性研究。
DESIGN a golden standard control study.
标准对照。
DESIGN: a complete random control study.
设计：完全随机的实验研究。
DESIGN: a self - control study was conducted.
设计：前后对照研究。
DESIGN: a completely randomized control study.
设计：完全随机设计，对照实验研究。
DESIGN: Random control study based on patients.
设计：以患者为研究对象的随机对照研究。
DESIGN:A non-randomly control study was conducted.
设计：非随机对照实验研究。
DESIGN: a completely randomized case-control study.
设计：完全随机对照研究。
A case control study nested in cohort was conducted.
本文进行了一项队列内病例对照研究。
Neural tube defects; Case control study; Risk factors.
神经管畸形；病例对照研究；危险因素。
Methods a community based case control study was designed.
方法以社区为基础的病例对照研究。
DESIGN: Completely randomized case-control study was adopted.
设计：完全随机对照实验研究。
DESIGN: Prospective case control study based on experimental animals.
设计：以实验动物为研究对象，前瞻性、对照研究。
Methods A random, double blind, and placebo control study was conducted.
方法采用随机双盲、安慰剂平行对照研究。
Study Design. Prospectie case-control study testing a new diagnostic method.
研究设计：为试验一种新的诊断方法而做的预期病例对照研究。
Inverted-pendulum is an ideal experimental object in intelligent control study.
倒立摆是智能控制的理想实验对象。
The U. S. Centers for Disease Control study on this issue have had a clear report.
美国疾病控制中心经研究后对这个问题有过明确的报道。
The methods of evaluation were mainly the control study(14.4%) and no control study(64.2%).
评价方法主要为无对照的研究（占64.2%）、有对照的研究（占14.4%）；
Methods Case control study and self-control study in Chinese herbal treatment group were conducted.
方法采用病例对照研究和中药治疗组自身前后对照研究。
The conclusion can provide the evidence for the in-process cutting control study using vibration signals.
文章的结论可为利用振动信号进行切削在线控制的研究提供依据。
The study says there must be a complete overhaul of air traffic control systems.
研究称必须对航空交通管理系统进行彻底的改革。
Study group and control group had isonitrogenous and isocaloric intake.
研究组和对照组所接受的氮量和热卡相同。
Study results appear in this month's issue of Tobacco Control.
研究成果刊登在了本月的《烟草控制》上。
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