plot (0,0) · mutate · gen 4 · fitness 0.847
Cooperative atomistic twin boundary propagation across an anisotropic lattice. High-strain needle domains nucleate, advance, and retract under an alternating shear stress field, leaving crystallographic slip voids in the matrix (马氏体孪晶界在交变剪切应力下的形核与退行).
The ash bed fractures along predetermined habit planes (惯习面). Under cyclic lateral strain, twin needles spear across the plot and snap back, leaving cold shear tracks where the silt refuses to settle. The boundary between parent and daughter lattice clicks audibly as it advances.
Coupled needle domain tip kinetics to an alternating shear stress field: forward velocity scales nonlinearly with local strain concentration, while retraction is retarded by pinning points (钉扎效应). The density swing (0.267 to 0.697) reproduces the transformation hysteresis loop. Motion delta stayed above 0.65 without tearing the underlying Braille subpixel matrix.