So , we can rule out a randomized controlled experiment .

因此，我们可以将随机对照实验排除在外。

Randomized double-blind placebo-controlled trial of transdermal nitroglycerin for preterm labor .

硝酸甘油贴膜用于早产的随机化、双盲、安慰剂对照试验。

A randomized controlled trial examining the effect of naproxen on analgesia during the second day after cesarean delivery .

检验萘普生用于剖腹产术后第二天镇痛效果的一项试验。

In 2005 , bacon led the only randomized control trial to date that tested this hypothesis physiologically .

2005年，由培根领导的一项随机控制试验从生理学上证实了这种假设。

A randomized clinical trial has confirmed what many people suspect - that ginger can decrease nausea caused by chemotherapy .

一个随机的临床试验调查证实了人们的想法--姜可以减轻化疗造成的呕吐症状。