非线性物理：引言一一形态发生 ·Anisotropic,Radial Viscous fingering:The lower plate of the cell has a rectangular etched lattice.Above a threshold injection rate, dendrites appear along one axis of the lattice. Along the other axis, regular tip splitting persists.非线性物理：引言－－形态发生 引言－－形态发生 • Anisotropic, Radial Viscous fingering: The lower plate of the cell has a rectangular etched lattice. Above a threshold injection rate, dendrites appear along one axis of the lattice. Along the other axis, regular tip splitting persists