Motion of a star across the line of sight causes no change in its spectrum . 恒星横越视线方向的运动，在它的光谱中不会引起什么变化。
The inertia terms and those relating to conduction in the x direction were also negligible . 惯性项和那些与X方向的导热有关的项也被略去。
The light is admitted through a slit in the curtain across the line of film motion . 利用帘布上的长条形狭缝沿卷片方向的运动来控制光线的进入。
If the compliances are not equal in the three orthogonal directions, it is anisoelastic . 如果在三个垂直方向的弹性变形率并不相等，即它是不等弹性的。
Force is not the only physical quantity which requires the specification of a direction in space as well as a magnitude . 需要表明大小和方向的物理量，不只是力。
The law which goes by his name is a useful rule for predicting the direction of an induced current . 这条用他的名字命名的定律，是判断感生电流方向的极有用的定则。
Each subscript refers to a coordinate which represents the location and direction of a force or of a displacement . 每一脚标指的是代表一个力或一个位移的位置和方向的坐标。
Grain orientation within the intertidal beach unit is characteristically more-or-less normal to the coastline . 在潮间海滩单位内，颗粒排列方向的特点是大体上垂直于海岸线。
This is what is meant by the common statement that "the pressure in a fluid is the same in all directions" . 这就是一般所说的：“在流体中，各个方向的压力都相同”这句话的意义。
In other words, the vertical component of its linear momentum remains zero, since there is no resultant vertical force . 换句话说，因为没有竖直方向的合力，所以线动量的竖直方向仍为零。
