还阐明了史瓦西场中各种坐标系的物理意义，并论证史瓦西黑洞的存在与所用坐标系无关，以及谐和坐标条件对解静态球对称时空不是必要条件。
It is proved that in general case , the harmonic coordinate conditions are not necessary for Schwarzschild metric ( i.e.spherically symmetric and static spacetime ) .
史瓦西坐标