例句與造句

1. The first chapter introduces several important models of investment portfolio in the present capital market , such as covariance model , capital asset pricing model , single index model and arbitrage pricing theory . in the last of this part , the thesis analyse strongpoint and disadvantage of each model
   第一章詳細(xì)介紹了目前資本市場(chǎng)上關(guān)于投資組合的幾個(gè)重要模型，如協(xié)方差模型、資本資產(chǎn)定價(jià)模型、單指數(shù)模型和資產(chǎn)套利模型等，在本章的最后，論文對(duì)這些模型各自的優(yōu)缺點(diǎn)進(jìn)行了簡(jiǎn)單的分析比較。
2. It's difficult to find covariance model in a sentence. 用covariance model造句挺難的