We shall study double integrals over more general sets in the plane.我们将研究定义在平面上更一般的集合中的二重积分.The last two integrals correspond to the natural boundary conditions.最后两个积分对应于自然边界条件.This cuts the labor of evaluating integrals...
He cracked jokes and talked about beer and girls.他爱说笑话，喜欢谈论啤酒和姑娘。She would have cracked up if she hadn't allowed herself some fun.她若是没给自己找点乐趣的话，早就崩溃了。When he spoke, his voice was hoarse and cracked.他说话时声音沙哑颤抖。...
好吧,那就把他变成一头熊, 如果你够本事的话.Davies : Fine then . Turn him into a bear. If you can.他们得靠进口小麦才够本国人民食用.They have to import wheat to be able to feed the country....
MARC can be well used for ultimate analysis in civil engineering.MARC具有 优异的非线性计算能力,可以作为土木工程极限分析的有力工具.Better result has been achieved by test of MARC simulation.经MARC模拟验证,取得了较好的效果.Applying for MARC software, three - dimen...
I have been moved to write a few lines of verse.我因感动而写下了几句诗。He published only three slim volumes of verse in his short life.在他短暂的一生里，他只出版过3卷薄薄的诗集。The verse rose up to fire his breast with inspiration.这首诗激发了他的灵感。...
Brisk brave brigadiers brandished broad bright blades , blunderbu es , and bludgeon -- balancing them badly.敏捷而勇敢的陆军旅长们挥舞着锋利的刀剑 、 大口径前膛枪和大头短棒 ─ ─身体差点失去平衡.Whatever he said, the swift answer crushed him like a bludgeon.不论他...