例句與造句

1. the linear regression models and the non-linear regression models are established respectively, which can be used in monitoring the grassland biomass based on the vegetation indices . finally, in order to establish the grassland biomass monitoring models with higher accuracy the different forms of the non-linear regression model were established respectively, including the quadric equation, the cubic equation, the logarithmic equation, and the exponential equation . the repeated tests indicated that the cubic equation is the best one in terms of the suitability of use in the study area
   建立遙感植被指數和草地生物量的一元線性回歸模型和非線性回歸模型，通過反復分析論證得出，非線性回歸模型相對于一元線性回歸模型與實測生物量更為符合；通過分析植被指數與實測生物量的不同非線性回歸模型的結果，表明三次方程y=-18.626rvi~3+220.317rvi~2-648.271rvi+691.093是最適用于監(jiān)測研究區(qū)草地生物量的非線性模型。
2. It's difficult to find exponential equations in a sentence. 用exponential equations造句挺難的