equazione da scrivere su piu’ righe

ciao

come posso scrivere spezando su piu’ righe questa equazione?
non ci riesco

\begin{equation}\label{eq:sette}
\chi^{(0)}_{(DE)}D_{0i}+\chi^{(0)}_{(DE)}\tilde{D}_{i}+\chi^{(1)}_{(DE)}\frac{\partial D_{0i}}{\partial t}+
\chi^{(1)}_{(DE)}\frac{\partial \tilde{D}_{i}}{\partial t}+\chi^{(1)}_{(DE)}v_{0k}\frac{\partial \tilde{D}_{0i}}{\partial x_k}+\\
+\chi^{(1)}_{(DE)}v_{0k}\frac{\partial \tilde{D}_{i}}{\partial x_k}+\chi^{(1)}_{(DE)}\tilde{v}_{k}\frac{\partial D_{0i}}{\partial x_k}+\chi^{(1)}_{(DE)}\tilde{v}_{k}\frac{\partial \tilde{D}_{i}}{\partial x_k}=\chi^{(0)}_{(ED)}E_{0i}+\chi^{(0)}_{(ED)}\tilde{E}_{i}+\chi^{(1)}_{(ED)}\frac{\partial E_{0i}}{\partial t}+
\chi^{(1)}_{(ED)}\frac{\partial \tilde{E}_{i}}{\partial t}+\\
+\chi^{(1)}_{(ED)}v_{0k}\frac{\partial \tilde{E}_{0i}}{\partial x_k}+\chi^{(1)}_{(ED)}v_{0k}\frac{\partial \tilde{E}_{i}}{\partial x_k}+
\chi^{(1)}_{(ED)}\tilde{v}_{k}\frac{\partial E_{0i}}{\partial x_k}+\chi^{(1)}_{(ED)}\tilde{v}_{k}\frac{\partial \tilde{E}_{i}}{\partial x_k}
\end{equation}