质量的已知和未知

KNOWN AND UNKNOWN THINGS ON THE MASS

质量是牛顿三定律内在联系的纽带，是一切力学体系均服从牛顿三定律的内在原因。在物理学里，质量是一个最简单最基本的物理量。然而，人们迄今还只能阐明质量的各种物理作用，从牛顿力学直到现代物理学的前沿，质量仍然是一个要由实验来测定的参量。因此，从根本上说，质量仍然是一个未知的物理量。

The mass is a tie by means of which the Newtons Law are connected each other; it is the internal cause by which the Newtons Laws hold true The mass is a simplest physical quantily, up to now one can explain only physics the mass is a parameter determined by experiment Therefore the mass is a physical quantily which is not yet understood But it must be researched thoroughly