A.Dj B.dj C.DJj D.Djj
A.(層高-100*2)/間距向上取整+1 B.(層高-50)/間距向上取整+1 C.(層高-50*2)/間距向上取整+1 D.(層高-100)/間距向上取整+1
A.max(5d,150) B.max(6d,100) C.max(6d,150) D.max(5d,100)