elliptical cross-section meaning in Chinese

椭圆截面

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。
The experimental and numerical studies on the two enhanced tubes are performed . the strong multi - longitudinal vortex flow in the aea - tube is induced by alternating change of the elliptical cross - section , and for the ddir - tube , the strong multi - longitudinal vortex flow is
交叉缩放椭圆管是通过椭圆截面的交叉变化诱导产生强烈的二次流和多纵向涡流，而不连续双斜向内肋管则是通过不连续的双斜向内肋对的作用形成强烈的多纵向涡。
First , with the variational method , the variational lower bounds of the characteristic impedance are respectively computed of the conformal coaxial lines with circular , regular polygonal and elliptical cross - sections . then the optimal variational lower bound of the conformal coaxial line with a square cross - section is obtained
本文首先用变分法求解了截面为圆形、正多边形和椭圆形的共形同轴传输线的特性阻抗的变分下界，得到了截面为正多边形的共形同轴传输线特性阻抗的变分最优下界。