例句與造句

1. This paper is concerned with , the existence and stability of travelling wave solutions for the viscous balance law which is an extension of viscous conservation law where a reaction term g ( u ) is added . l ) the existence of travelling wave solutions by geometric singular perturbation method , we investigate the existence of travelling waves ( a2 ) connecting a saddle point and a sink point and the existence of viscous shock waves c connecting two adjacent or disadjacent saddle points . by giving a detailed analysis of the fast and slow manifolds and verifying the transversality of the intersection of singular stable and unstable manifolds of the reduced problem along the singular heteroclinic orbit , we obtain the existence of travelling waves ( a2 ) in the case of a convex flow function / and that of viscous shock waves c under the assumption that f " is bounded
   主要結(jié)果如下： 1 )行波的存在性本文利用[ 37 ]中幾何奇異攝動理論，通過仔細(xì)分析= 0時的快流、慢流，驗證= 0時慢流方程的穩(wěn)定與不穩(wěn)定流形橫截相交于奇異異宿軌道，先在f為凸的條件下嚴(yán)格證明了( )存在連接不相鄰的鞍點、結(jié)點的行波( a2 ) ；然后在地f有界的條件下得到( )存在連接鞍點(包括相鄰和不相鄰)的粘性沖擊波c ，彌補了[ 11 ]缺少嚴(yán)格證明的不足，并推廣了[ 11 ]在f為凸的條件下得到的粘性沖擊波的存在性結(jié)果。
2. It's difficult to find convex flow in a sentence. 用convex flow造句挺難的