在气垫导轨实验中，第一步即是通过调节底脚螺丝校正气垫导轨的水平。通常检验导轨水平的方法是在导轨通气以后，将滑块放在导轨不同位置，看能否保持稳定不动；或者观察滑块起动后通过两个不同位置光电门的时间是否相等，从而判断导轨是否水平。需要指出的是，这种调整方法往 In the air guide experiment, the first step is to correct the level of the air guide by adjusting the foot screws. The method of checking the rail’s level is usually after the rails are ventilated. Place the slider on different positions of the rails to see if they can remain stable; or observe whether the time that the sliders pass through the two different positions of the photoelectric door is equal, so as to judge the guide rails. Is it horizontal? It should be pointed out that this adjustment method