It indicates that the internal structure of tundish is not good dnough. The flow field in tundish is improved and the production reauirements are met by adding weir,"V"and"U"shape walls,and adjusting the feasible angle and position of holes opened on the walls,thereby the normal operation of continuous casting and the quality of casting billet are assured.
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the walls abandon shape 这些墙失去了形状
The artists were highly skilled at using, or even enhancing, the natural shape of the cave walls to give depth and perspectives to their drawings, the sense of motion and vitality in these animals.
艺术家们高度熟练地使用，甚至增强了洞穴墙壁的自然形状，使他们的绘画具有深度和透视感，以及这些动物的动感和活力。
Lightweight skeletal frameworks, composed of rods and wires and controlled by pneumatic "muscles", serve as the walls of a building; adjusting their configuration changes the building's shape.
这个原型的轻型骨架是由金属杆与金属线组成的，由汽动装置控制，用它来作建筑物的墙壁，调整骨架布置就可以改变建筑物外形。
When vessel walls are damaged, collagen and tissue factor are exposed, and circulating platelets adhere via von Willebrand factor and undergo a change in shape with the accompanying release of ADP.
当血管壁受损，胶原蛋白和组织因子暴露，循环血小板通过血管性血友病因子的作用发生黏着，并伴形状改变和ADP的释放。
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