此外，移出高原且方向向东的MCSs主要决定于等压面高度、散度、涡度和假相当位温这4个物理量值。
Further more , the eastward-moving MCSs that has already moved out of the Plateau mainly depends on four physical values of constant pressure surface height , divergent , vortex and the potential pseudo-equivalent temperature .
假相当位温