右图中的球是围绕碳原子的电子云的图像。 它们分别是径向对称的球和中间有节点的双扁球形状，就像s和p原子轨道给出的电子密度图。
There’s a radially symmetric blob, and a double-lobed blob with a node in the middle – just like the patterns of electron density that the s and p atomic orbitals give rise to.
这种双侧不对称开始出现在青少年发育的第六阶段。
This bilateral asymmetry begins to appear in the juvenile sixth stage of development.
本文利用半地转模式研究了对称和非对称地形以及双地形对冷锋锋生过程的影响。
The influences of symmetric, asymmetric and double mountains on the frontogenetical process of a cold front are studied by using a semigeostrophic model.
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