As for flat roll of F4 ~ F6 stands, their pre-grinding crowns were optimized and the flatness of strips was greatly improved.

对F4 ~ F6机架平辊的预磨凸度进行优选，明显改善了带钢的平直度。

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A series of flexible U sections, changed in its sections, was separately simulated and analyzed by edger roll forming and flat roll forming.

基于中厚板无切边轧制法中立轧轧边变形的物理模拟，分析了平辊立轧与倒棱轧制对中厚板断面形状的影响。

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If it shows the entire sole of our foot with little to no curve on the inside, it means you have low arches or flat feet and tend toward over-pronation (your feet roll inward).

如果脚印描出你的整个脚底，内测几乎没有任何曲线，就表示你的足弓较低或属于扁平足，倾向于过度内旋(你的脚往内翻)。

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Keep your feet flat on the floor, roll your shoulders back and keep your ears directly over them so your head isn't tilted forward.

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All of this is served on a particular roll baked for the express purpose, a round, flat bun derived from a traditional Sicilian bread.

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