现在放些二级形，环绕管子的圆环。
Now lets place some secondary shapes, rings around the pipe.
这就是概率论中第二个基本极限定理的原始初形。
This is the probability limit theorems in the second basic form of the original first.
因为它们是相邻的，所以肯定有一条多边形边在二者之间。
For them to be adjacent there must be a polygon edge between them.
再后，送进至第二组冲模将带形刀片的底端冲断，带形刀片成为成品。
Then, send to the second punch die to cut off the bottom end of the strip blade to the final product.
面是二维空间所构成的形。
面是二维空间所构成的形。
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