After the structure separation completed, the grain size and shape factor increased with the increase of the heating time.

组织分离完成之后，晶粒的尺寸和形状系数随时间逐渐增大。

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Experimental results show that the grain size of diamond grinding wheel and grinding depth have important influence on micro-topography such as geometrical shape and surface topography etc.

实验结果表明，金刚石砂轮磨粒尺寸和磨削深度对磨削表面的微观形貌如几何形态和表面纹理具有重要影响。

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From the aspects of grain size, impurity shape and size, structure type and so on, the control or influence factors of pipeline toughness are discussed.

本文从晶粒尺寸、夹杂物形态和大小以及组织结构类型等几个方面论述了管线钢韧性的控制或影响因素。

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