Saddle test also shows that the steel plate with fine and polygonal ferrite structure possesses long fatigue life.

实物台架试验表明，细小多边形铁素体组织的钢板具有更高的疲劳性能。

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Rotating the polygonal head with tools to tightening bolt and the object can be fixed on the structure.

通过工具旋转上述多边形头部，紧固螺栓，将 上述被紧固物紧固于结构物上。

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The polygonal reticulate structure is well developed and wide spread in the Pagoda Formation limestones in the whole Yangtze region.

网纹构造是宝塔组石灰岩地层中非常发育且分布广泛的一种构造形态 ，其成因一直存在争论和疑问。

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The archaeological team found the footings of what appears to be part of a polygonal structure during their evaluation of the site at New Inn Broadway.

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