准确测定绝对重力值,对精密测试、国防工程、地球物理以及天文学都有重要意义. 近代标准物理实验室的一些物理量的精密测量需要十分精确的当地重力值.例如,它和标准质量一起,共同构成力的标准,重力值每差1mgal,对力和压力标准影响近百万分之一.又如在建立电流单位时,我们定义安 Accurate determination of absolute gravimetric value is important for precision testing, defense engineering, geophysics and astronomy.Newly accurate measurements of physical quantities in modern standard physics laboratories require very accurate local gravitational values, for example, in conjunction with standard quality Constitute a force standard, the value of each difference of gravity 1mgal, the force and pressure standards affect nearly one millionth. Another example in the establishment of current units, we define the safety