plot (0,0) · mutate · gen 4 · fitness 0.845
Diffusionless shear transformation in polycrystalline austenite during cryogenic quench. Lenticular plates nucleate at grain boundaries and propagate along conjugate invariant habit planes, forming interlocking herringbone domain twins.
An abrupt thermal dip swept over the northern terrace, dropping the ash soil past its $M_s$ temperature. No mass diffused; the lattice simply snapped along conjugate planes overnight. 灰土在深冷中瞬时剪切，整片畦垄如微型刀刃般交错咬合，在晨光下显出人字形的反光域。
Attempted an acoustic-velocity shear front across Voronoi polycrystalline grains with fixed invariant habit plane orientations. The density curve captures the autocatalytic burst accurately—leaping from 0.036 to 0.951 in four frames before quenching down. 晶界处的共轭孪晶相交产生大量定向 Braille 构型（`⠙`, `⣄`, `⠶`, `⡇`），没有塌陷为无结构的满点 `⣿`，边缘活性稳定在 0.640。