The principal directions corresponding to two distinct principal strains are orthogonal . 和两个不同的主胁变相对应的主方向是互相正交的。
Construct a set of rectangular axes and resolve any inclined forces into rectangular components . 作一组直角坐标轴，把各力都分解成正交分量。
An element of the material at such a point behaves like a crystal of the orthorhombic system . 材料中此点附近的一个单元体，其表现犹如正交晶系的晶体。
Differential thermal analysis did not reveal the ammonium perchlorate phase change from rhombic to cubic . 差热分析没有测出过氯酸铵从正交晶向立方晶的相变。
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。
The orthonormality relations also permit us to express the power carried by the total field in terms of the expansion coefficients . 根据正交性我们还可以用展开系数来表示整个场承载的功率。
They form a three-parametric, orthogonal net and may be chosen as coordinate lines of a special, curvilinear coordinate system . 它们形成三参数正交网，可以把它们选作特殊曲线坐标系的坐标线。
it is usually convenient to replace δs by its components δs1 and δs2 parallel to any two perpendicular axes ox, oy in the plane. 通常用它的分量s1和s2来代替s较为方便，它们分别沿平面内的ox，oy两个正交的轴线的方向。
The stability analysis for orthotropic thin plates 正交异性矩形薄板的稳定性分析
Thermal - buckling of polar orthotropic annular plates 极正交各向异性环板的热屈曲
