Appendix A. An evaluation of several moment closures for the dynamical system in Eqs. 4 and 5 (including the one given as Eq. 6).

An evaluation of several moment closures for the dynamical system in Eqs. 4 and 5 (including the one given as Eq. 6).针对式(4)与式(5)所定义的动力学系统，对多种矩封闭（moment closures）方法开展评估，其中包含式(6)所给出的矩封闭形式。