The special case in which the specified directions are at right angles to each other is of particular importance . 分量的方向互为垂直的特殊情况是十分重要的。
We have shown surface tractions on three rectangular boundary surfaces of the body . 在这个单元体的三个互相垂直的边界上，我们指明了作用在这些边界面上的面力。
Dynamic evaluation is used to determine the motion in a direction at right angles to the observation direction . 动力学的计算，是用来确定与观察方向相垂直的运动。
His plan is to drop perpendiculars from each point of the curve upon two planes intersecting at right angles . 他的计划是：从曲线的每个点处作线段垂直于两个互相垂直的平面。
The bundles are superimposed in several planes and interlace with one another in three planes: longitudianl, vertical and horizontal . 纤维束则以各种不同的方向，从三个平面互相交织，有纵走的，垂直的及平行的。
The northern side of the mountain is almost vertical 这座山的北侧几乎是垂直的。
Should they focus on certain vertical markets 他们是否应将焦点放在某些垂直的市场
Their eyes were large with vertical pupils 他们的眼睛更大，拥有垂直的瞳孔。
Sitting and standing are both ( vertical ) positions 坐和站都是(垂直的)位置。
We have vertical walls of cirrus cloud formations 我们遇到了垂直的环状云团
