如果后梁不转动，随着织造的进行(织轴逐渐变小)，经纱对后梁的包围角会增大，处于水平位置的经纱片的张力会增加。
When the back roller does not rotate, the tension in the horizontal part of the warp sheet will increase as the Angle of the warp sheet round the back roller increases as the warp weaves down.
当压力、包围角和滚筒半径在某一范围内变化时，以临界曲面的方法寻找曲面上与坐标原点距离最小的点，以此点作为理论上的防滑移设计最优方案。
When these factors vary in some range, the method of the critical curved surface can be used to find the critical point which has the shortest…
中世纪的角塔围墙包围着这城市，这里曾经作为基督国的首都有接近一百年。
A turreted medieval wall enclosed the city, which had once served as the capital of Christendom for nearly a hundred years.
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