椭圆形是由圆形变成的长圆形,比圆形扁。叶片中部宽而两端较狭,两侧叶缘成弧形,称为椭圆形叶。 在同一平面上,固定两点到另一点距离之和相等的点的集合叫椭圆形
Our analytic works in concrete are mainly as follows:Scattering of dynamic SH-wave and dynamic stress concentration problem are investigated by ellipse cavities in the whole space.
本文的具体工作如下: 研究了全空间界面上含椭圆形孔洞对瞬态SH波的散射和动应力集中的问题。
参考来源 - 地震波作用下地下含界面结构动态分析数值仿真·2,447,543篇论文数据,部分数据来源于NoteExpress
地球沿椭圆形轨道运动。
蜜蜂总能分辨出圆形和椭圆形。
Bees can always tell the difference between a circle and an oval.
它更像是一个椭圆形的。
s plus 1s gives you this oval ellipsoid which is the bonding, and here are the antibonding, and then these are the energy levels that I have been drawing for you.
s和1s上两个电子组成的键合电子成椭圆形,这是成键,这是反键电子,这些是刚刚已经画过的能级,我也给你们画了。
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