DESIGN: a controlled observational experiment.
设计：对照观察实验。
DESIGN: a controlled and observational experiment.
设计：对照观察实验。
An observational experiment in French bars investigates the effect of music volume on drinking habits.
(研究人员)在法国各酒吧作了观察实验，研究了音乐的音量对饮酒习惯的影响。
Middlemist et al. were not satisfied with this observational data, however, and decided to carry out a proper experiment.
然而，Middlemist等人对这个观察到的信息不太满意，所以决定进行深入实验。
The observational principle, characteristics, comparing observation, experiment and application of this apparatus are introduced in this paper.
介绍了该波潮仪的测量原理、特点、测试、试验及应用情况。
In this paper, a simple numerical experiment of the analysis error of statistical interpolation has been made by using ideal observational network.
采用理想观测网，用数值方法计算统计插值分析误差。
In this paper, a simple numerical experiment of the analysis error of statistical interpolation has been made by using ideal observational network.
采用理想观测网，用数值方法计算统计插值分析误差。
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