The calandria arrangement in the furnace floor flue gas channel that is formed by the ondol pier bricks with circular sections greatly lowers the local resistance loss of flue gas.

由圆形截面的炕墩砖，在炉底烟气通道中形成的排管式排 列，将大大降低烟气的局部阻力损失。

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Silvia expects the first sections of the wall, which will follow a circular walkway in the center of the cemetery, will be in place by that time.

WSJ: Expanding hallowed ground at West Point cemetery