实验的主要优点在于能更好地控制无关 变量的影响。就是通过一定的方法和手

实验的主要优点在于能更好地控制无关 变量的影响。就是通过一定的方法和手段，来控制其他因素，从而使自变量以外 的其他因素都保持恒定。

結果 (英文) 1:

Main advantage is better control of the experimental effects of independent variables. Through certain methods and means of controlling for other factors, so that factors other than independent variables remain constant.

結果 (英文) 2:

The main advantage is that the test can better control the impact of unrelated variables. It is through certain ways and means to control other factors, so that factors other than the independent variables are held constant.

結果 (英文) 3:

The main advantage of the experiment is that it can better control the influence of the independent variables. Is through a certain way and means, to control other factors, so that the independent variables other factors are kept constant.