物理学中的变量控制法是指当一个物理量A与多个物理量有关系时,我们要研究物理量A与这几个物理量之间的关系,可以每次只改变其中的某一个物理量B,而其余的物理量保持不变,先研究被改变的物理量B对物理量A的影响,然后依此法逐个研究,最后归纳总结.它是一种科学的研究方法,被广泛地运用在 The variable control method in physics means that when a physical quantity A is related to a plurality of physical quantities, we need to study the relationship between the physical quantity A and the several physical quantities, and only change one of the physical quantities B at a time, and the rest Of the physical quantity remains the same, first study the impact of the changed physical quantity B on the physical quantity A, and then study one by one according to this method and finally summarize it. It is a scientific research method and is widely used in