为了找到带法向量的面元，我就取这两个的叉积。
To find the surface element together with a normal vector, I would just take the cross-product between these guys.
叉积是计算几何中关于线段算法的核心。
In computational geometry, computing cross products is at the heart of line-segment methods.
通过计算环的最大坐标值点处相邻两条边的切矢的叉积来判断环的方向。
The loop direction is judged through the vector product of the adjacent two edges on the vertex with maximum coordinate value.
实践表明，该算法避免了叉积运算，有效地提高了判别速度，而且实现算法简单、稳定。
Tests show that the algorithm effectively improves identifying speed, simple and stable, because it avoids cross-product operation.
在交叉联接中，一个表中的每一行与另一个表中的每一行合并，导致生成叉积或卡迪尔积。
In a cross join, each row from one table is combined with each row from another table, resulting in what is called a cross product or a Cartesian product.
在交叉联接中，一个表中的每一行与另一个表中的每一行合并，导致生成叉积或卡迪尔积。
In a cross join, each row from one table is combined with each row from another table, resulting in what is called a cross product or a Cartesian product.
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