We can't know for sure because this is not a controlled experiment.
我们不能确定，因为这不是一个可控实验。
DESIGN: a controlled experiment was conducted on the basis of clinical diagnosis.
设计：以诊断为依据设立对照的实验研究。
And in a controlled experiment on hiring decisions, male leaders were not penalized for choosing a woman or nonwhite candidate over an equally qualified white man.
此外，一项关于招聘决策的受控实验显示，男性领导者如果选择了女性或非白人候选人，而非具有同等资历的白人男性，并不会因此受到惩罚。
She thinks that designing a controlled experiment will give researchers a better understanding of the factors affecting IVF outcome, rather than just analyzing statistics.
她认为，设计一项对照试验与仅仅分析统计数据相比，将更有助于研究人员了解影响IVF成功率的因素。
History is not a controlled experiment and so we cannot know exactly what would have happened absent a particular Supreme Court decision (or any other event for that matter).
历史是一个不受控制的试验，我们不能确切地知道如果没有最高法院的判决(或其它与之有关的任何事件)将会发生什么。
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。
Wary of these possible criticisms, Rule and Ambady conducted a second experiment that controlled for such extraneous variables as self-presentation and hairstyle.
处于对这些批评的谨慎，rule和ambady实施了第二次实验以控制外部变量，例如自我表现和发型。
These items do not need to be controlled for lexical frequency differences, but you need to say which words in the items need to be matched for lexical frequency in a real experiment.
这些项目不需要控制词频差异，但是你需要说出项目中的哪些词需要与实验中的实际词频相匹配。
For the implantation dose determines the irradiation injury degree of biological sample, it's a important parameter that should be measured and controlled accurately in the experiment.
在离子注入生物诱变实验中，注入剂量决定了生物样品的辐射损伤程度，是要求精确测定并控制的一个重要参量。
In the experiment, they took groups of pregnant mice - a species with a similar finger-length ratio to humans - and controlled the genes which affect their oestrogen and testosterone levels.
他们抽取了一类与人类手指长度比率相似的孕鼠群体为样本做实验，控制那些影响孕鼠雌激素和睾丸素水平的基因。
Its validity is demonstrated by comparative experiment results obtained from a nonlinear liquid system controlled by DCS.
在一个DCS控制的非线性液位装置上的对比实验结果表明了该方法的有效性。
This paper reports a testing set up for two dimensional image measurement controlled by a microcomputer, its application to the laser experiment and the optical inspection.
本文简要介绍用微机控制二维图象测试装置及其在激光实验和光学检验中的应用。
The controlled classroom experiment involved the volunteers following a 14-minute tutorial which is freely available online.
在这个被控制的小组实验中，志愿者线上免费学习了一个14分钟的教程。
In a controlled chamber stress experiment, we tested the damage index and mortality of cuttings caused by low temperature of 54 short-rotation eucalypt clones.
本试验共测定了54个短周期桉树无性系在人工气候培养室中的低温胁迫伤害指数和死亡率。
DESIGN: a controlled observation experiment.
设计：对比观察实验。
Thermal model experiment of catalyst synthesis shows the shape of the N-catalyst can be controlled by using the above optimized agitation in a certain range of rotating speed.
催化剂合成热模实验表明，采用以上的搅拌形式，在一定的搅拌转速范围内，可以较好地控制催化剂的颗粒形态。
The comparison experiment results obtained from a nonlinear liquid system controlled by a distributed control system (DCS) show that this method retains the good performance of the conventional MGPC.
在一个由集散控制系统(DCS)控制的非线性液位装置上的对比实验结果表明，该方法保持了常规MGPC方法的优良性能。
The theory and corresponding experiment of the intensity profile modification of a Gaussian laser beam by an ultrasonic standing wave (controlled by electricity) are reported and discussed.
本文报道和讨论了在超声驻波作用下实现激光高斯光束空间强度整形的原理与实验。
A pot experiment grown wheat in which lignin was used as a controlled-release material of urea, it was conducted to research the effects on growth and nitrogen-utilized effects of wheat.
采用小麦盆栽试验方法，进行了利用木质素作为尿素控释材料对作物生长作用和提高氮肥利用率的研究。
DESIGN: a randomized and controlled experiment, multiple variable analysis.
设计：随机对照实验，多变量分析。
DESIGN: a controlled observational experiment.
设计：对照观察实验。
A fully digital experiment system controlled by TMS320F240DSP is introduced and the hardware is simplified.
基于TMS320F 240ds P构建全数字化试验系统，简化了系统硬件电路，提高了系统的可靠性。
With the peak-seeking servo-controlled technology based on a residual error, an external optical cavity can keep in resonance with the frequency of Ti-sapphire laser in the experiment.
基于有差伺服调节技术，实现了外置光学谐振腔的共振频率与钛宝石激光器工作频率的锁定。
DESIGN: a controlled and observational experiment.
设计：对照观察实验。
In a unique aviation experiment recently, the 170-seat Boeing 727 was made to crash in a controlled manner in a remote part of Mexico's Sonoran Desert.
在近日开展的一项独特的飞行试验中，一架有170个座位的波音727飞机被控坠落在墨西哥索诺拉沙漠的一个偏远地带。
In a unique aviation experiment recently, the 170-seat Boeing 727 was made to crash in a controlled manner in a remote part of Mexico's Sonoran Desert.
在近日开展的一项独特的飞行试验中，一架有170个座位的波音727飞机被控坠落在墨西哥索诺拉沙漠的一个偏远地带。
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