first-order approximation造句

• 3 . based on the characteristic of the sensor distribution inside a platform , a sensor registration model for single - platform alignment is given . with the taylor series , we can get the first - order approximation of the registration model
  根据平台内传感器空间布局特点给出平台级传感器的配准模型，并对配准模型进行一阶近似，最后通过kalman滤波算法求出系统偏差的估计。
• In this paper , we prove that for a three - level atom in a circularly polarized electromagnetic wave , there is a coherent superposed state of its two states such that when the atom is initially in the state , under the zero - order approximation , the atom is always in the state hereafter , while the occupation probabilities that the atom is in other states are zero ; under the first - order approximation , the atom is nearly in the state , while the occupation probabilities that the atom is in other states near zero
  本文证明：对圆极化光中的三能级原子，存在着由它其中的两个态构造的一个特殊的相干叠加态，当原子最初处于这个态时，它以后将总是几乎处于这个态，而原子处于其他态的概率接近于零。