最高阶导数线性地出现的那种方程是准线性方程.A quasilinear equation is one in which the highest - order derivative appears linearly.这种 “ 导数边界条件 ” 的规定描述于 3-5 节中.The specification of such " derivative boundary conditions " is described in Sectio...
Swords brandished and banners waved.刀剑挥舞,旌旗飘扬.The jester brandished his bauble.丑角挥动手中拿着的木棒.The old man brandished his walking stick at the menacing dog.老人对着那条要咬他的狗挥舞手杖吓它走....
The treaty was to the aggressor's advantage.条约对侵略者有利.We must face down every aggressor.我们必须制止一切侵略者.The aggressor troops still hung on there.侵略军仍然赖在那里不肯撤走....
...the cathedral city of Canterbury.有主教座堂的坎特伯雷市St. Patrick’s Cathedral is famed for its midnight mass on Christmas eve.圣巴特里克大教堂以其圣诞前夜的午夜弥撒著称。The cathedral was eventually completed in 1490, though the Gothic facade remain...