solid axis

And, of course, that only works if the solid has some axis of symmetry.

当然，前提是物体的对称轴存在。

Analytical analysis is based on mechanics of elasticity. When we use ANSYS software to do finite element analysis, axis symmetry element PLANE 183 and three-dimensional twenty-node solid element SOLID 186 are used separately.

解析分析以弹性力学为依据，有限元分析采用ANSYS软件，在利用ANSYS软件进行有限元分析时，分别采用了实体单元中的轴对称单元PLANE183和三维二十节点的六面体结构实体单元SOLIJD186。

In recent yeas, the rapid development of computational fluid dynamics has laid a solid material foundation for the vertical axis wind turbine.

近些年来计算流体力学的飞速发展为垂直轴风力机的发展奠定了坚实的物质基础。