operation in experiment

例句：

1. 1. The scientist conducted an experiment to determine the effect of temperature on the reaction.
   科学家进行了一个实验，以确定温度对反应的影响。
2. 2. The engineer designed a new model for the experiment.
   工程师为实验设计了一个新的模型。
3. 3. The physicist performed several experiments to validate his hypothesis.
   物理学家进行了几次实验来验证他的假设。