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在 2D CG 中，缩放变换 {{ 2, 0 }, {0, 3 }} 有 \det = 6 ——面积乘以6。
在 2D CG 中，缩放变换 {{ 2, 0 }, {0, 3 }} 有 \det = 6 ——面积乘以6。
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