Thee extent of the test of control is the times of the test for some control activity.

控制测试的范围，是指某项控制活动的的测试次数。

youdao

youdao

youdao

So, you didn't know at the beginning, you knew you were enrolled in the trial, they gave you a shot, you didn't know whether you were part of the real group that got the test vaccine or the placebo group that got the control; turned out that Bonnie was part of the control group.

一开始你可能不清楚全过程,你只知道你参与了一项试验,他们给你打了一针,你不知道你是属于接种了,试验疫苗的真实试验组,还是属于被注射了安慰剂的空白对照组,结果显示,邦妮属于对照组

耶鲁公开课 - 生物医学工程探索课程节选

If you attribute your successful results on luck or ease of the test, your locus of control is external.

FORBES: Nothing Bad Is My Fault: Toxic Financial Attitudes

The question of space control represents a sort of IQ test -- short for integrity quotient -- for today's uniformed leadership.

CENTERFORSECURITYPOLICY: Clinton Policies Would Disarm U.S. Space Capabilit

There has been one hiccup: In August, an unmanned spacecraft veered out of control during a test flight and had to be destroyed.

WSJ: What Makes Jeff Bezos Tick? A $42 Million Clock, for Starters