equation n. 1.平衡,均衡;平均,相等。 2.【數(shù)學】方程式,等式。 3.【天文學】(時)差;均分,等分。 4.【化學】反應式。 algebraic [linear, simple, quadratic, cubic, simultaneous] equation 代數(shù)(一次,一元一次,二次,三次,聯(lián)立)方程式。 differential equation 微分方程。 an identical equation 恒等式。 equation of light 【天文學】光行時差。 equation of payments 平均分期付款。 equation of state 【物理學】物態(tài)方程式。 equation of time 【天文學】時差。 personal equation 【天文學】觀測上的個人誤差。
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(shù)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(shù)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。
英文解釋
an equation involving exponential functions of a variable