In soft - photon approximation , the average excitation energy only appears in the first and second order terms of field frequency 在軟光子近似下,平均激發(fā)能僅出現(xiàn)在光場頻率的一階和二階項上。
Abstract : in the way of adjustment with the first and second order term of expanded nonlinear function in consideration and the way of nonlinear adjustment in the fields of nonlinear to do the same adjustment , by comparison of its ' results , stressed on the necessity of constructing theory of adjustment & data processing in the space of nonliear functions 文摘:用顧及一階泰勒項的線性平差方法,顧及二階泰勒項的線性平差方法及非線性函數(shù)空間的平差方法對同一平差問題進行研究,在比較其平差效果的基礎(chǔ)上論述了建立非線性函數(shù)空間測量平差與數(shù)據(jù)處理理論的必要性。