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。
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。
The shape of the cap body is of a fold-type and flexible structure and is round or rectangular, quadrate, elliptical, trilateral, and polygonal.
杯身外形是圆形或方形、长方形、椭圆形、三角形、多边形状的。
The shape of the cap body is of a fold-type and flexible structure and is round or rectangular, quadrate, elliptical, trilateral, and polygonal.
杯身外形是圆形或方形、长方形、椭圆形、三角形、多边形状的。
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