例句與造句

1. the basic concepts of second-order coherence theory in describing wavefields are introduced . these concepts are the cross-spectral density function and spectral degree of coherence in the space-frequency domain, and the mutual coherence function and the complex degree of coherence in the space-time domain
   介紹了二階相關(guān)理論中描述光場相干性質(zhì)的基本概念，包括空間-時(shí)間域中的互相關(guān)函數(shù)、復(fù)相干度和空間-頻率域中的交叉譜密度函數(shù)、光譜相干度。
2. It's difficult to find complex degree of coherence in a sentence. 用complex degree of coherence造句挺難的