The temperature and pressure at the focus is different from the shallow of the crust and the ground. The higher temperature and pressures, the larger conjugate rupture angle.
地震震源处，其温度和压力与地壳浅处及地表不同，温、压越高，共轭破裂角越大。
2
The conjugate principle of the variable ratio gear with constant center distance and constant contact Angle has been analysed.