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。
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。
DESIGN: a controlled observation experiment.
设计：对比观察实验。
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。
DESIGN: a controlled and observational experiment.
设计：对照观察实验。
DESIGN: a controlled and observational experiment.
设计：对照观察实验。
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