在实验中，温度是一个变量。
在该实验中温度是个变量。
该项实验是通过对于病人治疗方式的随机分配来控制变量的。
The experiment was controlled by the random allocation of the treatment among the patients.
在该实验中温度是一个变量。
改变实验装置，通过产生相同量的氢气来重新控制变量。
Change the experiment device to produce the same amount of hydrogen to control variables.
设计：随机对照实验，多变量分析。
DESIGN: a randomized and controlled experiment, multiple variable analysis.
三容水箱液位控制实验系统是一种非线性、强耦合、多变量和大滞后的复杂系统。
Then, several typical multi-variable level control experiments on three tank liquid-level control system were designed.
三容水箱液位控制实验系统是一种非线性、强耦合、多变量和大滞后的复杂系统。
Then, several typical multi-variable level control experiments on three tank liquid-level control system were designed.
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