The package has a continuous, elongated design with a circular, elliptical, square, rectangular or polygonal cross section.
该包装具有圆形、椭圆形、方形、矩形、或多边形横截面的连续细长设计。
The elliptical cross-section is assumed for the braiding yarn, which is more approximate to the realistic situation of the yarn in the composites.
该模型中编织纱线具有椭圆形横截面，较已往圆形横截面的假设更接近于真实情况。
It is shown that concentration in the jet cross-section takes elliptical Gaussian distribution.
实验表明，浮力射流的横断面内浓度呈椭圆形高斯分布。
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