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,通過仔細分析= 0時的快流、慢流,驗證= 0時慢流方程的穩定與不穩定流形
橫截相交於奇異異宿軌道,先在f為凸的條件下嚴格證明了( )存在連接不相鄰的鞍點、結點的行波( a2 ) ;然後在地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 ]缺少嚴格證明的不足,並推廣了[ 11 ]在f為凸的條件下得到的粘性沖
擊波的存在性結果。
Because the traitors and collaborators in china are numerous and powerful and are sure to devise every possible means to wreck the united front ; they will sow dissension by means of intimidation and bribery and by manoeuvring among various groupings, and will employ their armies to oppress and crush, one by one, all those weaker than themselves who want to part company with them and join us in fighting japan
因為中國的漢奸賣國賊是很多的,並且是有力量的,他們必然想出各種法子來破壞這個統一戰線,用他們威迫利誘、縱
橫捭闔的手段來挑撥離間,用兵力來強壓,來各個
擊破那些比較他們小的、願意離開賣國賊而同我們聯合起來打日本的力量。
Final, the effect of the deformations in landscape orientation by simulation computation are given
最後通過模擬計算給出了沖
擊波對梁的
橫向變形的影響。
No damage in the wall panel and door after hit by 75kg sandbag
以75公斤重沙袋對板壁及門進行
橫向撞
擊試驗,沒有損壞。
The impact tests were carried out at the mid - span, and internal pressures of ompa, 5mpa, lompa and 15mpa were used in addition to the tests with water. the critical energy of perforation and the ballistic speed was measured, and the various types of rupture were identified from the section of the test specimens. force - time curves and internal pressure - time curves were obtained from experiment
實驗中記錄了沖
擊力時程曲線和內壓時程曲線,測量了鋼管軸向和周向
橫截面的變形,得到了不同工況下的破壞模態、臨界穿透能量以及彈道極限速度,並找到了臨界穿透能量隨內壓的變化規律。
Until they do, thousands of lives are lost and millions of tons of supplies never make it to england
德軍潛艇
橫行大西洋,無聲無息從海底深處突
擊盟軍船隻,令盟軍傷亡枕藉,補給截斷。
Who knows what may happen, or how long the attack may last ? " in spite of the magnitude of the misfortune which thus suddenly frustrated his hopes, dant
這飛來的
橫禍對唐太斯那一腔熱血是個極沉重的打
擊,但唐太斯並沒因此被打蒙了頭。
The painful catastrophe he had just witnessed appeared effectually to have rent away the veil which the intoxication of the evening before had raised between himself and his memory
他現在目擊的這場突如其來的橫禍已揭去了他昨天醉酒時蒙在記憶上的那層薄紗。