We will consider first the case of two-dimensional incompressible steady flow through orthotropic soil . 我们首先考虑二维不可压缩流体通过正交各向异性土层的定常流动。
A body is said to be in a state of plane stress or alternatively in a two-dimensional or biaxial state of stress . 据称该物体处于平面应力状态或二维应力状态或双轴应力状态。
So far as is known to the writer, a similar theoretical treatment for a thin two-dimensional sheet has not been carried out . 据作者所知，至今还没有人对二维薄片进行类似的理论处理。
The finite-element method can be regarded as an extension of the displacement method to two-and-three-dimensional continuum problem . 有限单元法可以看作是位移法对二维和三维连续体问题的推广。
Two-and three-dimensional hydrodynamic computer codes have been applied to the study of the early phases of the collapse of a gas cloud . 二维和三维流体力学计算机程序，已用于研究气体云的早期坍缩。
In two and three dimensions the yield limit is reached when a certain function of all the stress components reaches a fixed value . 在二维或三维的情况下，当所有应力分量的某个函数达到某一固定值时可达到屈服极限。
This last property illustrates why, in general, three-dimensional space is required for the geometrical realization rather than two-dimensional space . 这后一性质说明了为什么几何实现一般需要用三维空间而不是二维空间。
If the floor was infinite in extent, the mathematical distribution of reflected light could be regarded in terms of a two-dimensional fourier series . 如果地板的广度是无限的，那么可以用一个二维傅里叶级数来表示反射光的数学分布。
Two dimensional symbol - qr code - basic specification 二维符号. qr编码.基本规范
2d multi - resolution wavelet analysis of pet signals 信号的二维多分辨率小波分析
