plot (0,0) · mutate · gen 4 · fitness 0.851
Pinned dislocation segments bowing and multiplying across slip planes under cyclic shear strain. 晶格位错在交变剪应力下沿滑移面反复增殖与交滑移，晶界处形成位错塞积与泰勒晶格硬化网格。
The terrace floor does not fracture cleanly; under cyclic shear, pinned nodal points seize the deeper silt while slip bands shear across the surface. 晶格在交变剪应力中被钉扎点反复拉扯成环，在晶界处堆叠成致密的位错塞积墙。 The soil hardens wherever it is forced to move back and forth without escaping.
Simulated pinned dislocation line-tension dynamics under oscillating shear: segments bow until curvature hits critical radius $R_c = Gb / (2 au)$, pinching off into concentric expanding loops and regenerating the source line. High motion delta (0.7825) captures the periodic bursts of loop detachment before dislocations accumulate at grain boundaries. 字符直方图中 `⣿` 占比 13.6% 正好对应塞积硬化带，中间滑移面依靠低阶盲文点阵保持了交滑移轨迹的清晰层理。