These motions produce a shift in the position of lines in their spectra . 这些运动使其谱线位置产生位移。
Very often one is interested in the position of the moving body as a function of time . 人们经常感兴趣的是运动物体的位置对时间的函数关系。
This pattern may be recorded on film by simply placing the film in the position of the screen . 只要把胶片放在屏幕的位置上,就可在胶片上录下这个图样。
We are now in the position of having constructed a model economy, which we have found to lie upon the verge of instability . 我们构造了一种经济模式,我们发现它位于不稳定的边缘。
His assumption of the premiership implied a delicate but perceptible change in the position of the foreign secretary . 他就任首相以后,就使外交大臣的地位发生了一种非常微妙但又可感觉到的变化。