天平不等臂性的原因及调修横梁的不等臂性是由于三把刀子的相对位置不正确而产生的。导致横梁不等臂性的原因主要有以下几点。１．横梁的材料不均匀，两臂的热涨系数不同，以及固定刀子的螺钉与横梁的热涨系数也不相同。当温度升高或降低时横梁两臂长度的变化不一，因而加... Balance arm ranging from the reasons and the adjustment beam unequal arm is due to the relative position of the three knives produced incorrectly. The main reasons leading to unequal arm beam are the following points. 1. The material of the beam is not uniform, the thermal expansion coefficient of the two arms is different, and the thermal expansion coefficient of the screw and the beam of the fixed knife are also different. When the temperature increases or decreases, the length of the two arms vary with each other, thus adding ...