[{"title":"( 7 个子文件 959KB ) 波动方程有限差分","children":[{"title":"波动方程有限差分","children":[{"title":"1文摘.pdf <span style='color:#111;'> 35.26KB </span>","children":null,"spread":false},{"title":"新建 文本文档.txt <span style='color:#111;'> 0B </span>","children":null,"spread":false},{"title":"第二节波动方程的建立.pdf <span style='color:#111;'> 90.49KB </span>","children":null,"spread":false},{"title":"第一节波动方程波场延拓的概念.pdf <span style='color:#111;'> 46.48KB </span>","children":null,"spread":false},{"title":"第一节方法的提出.pdf <span style='color:#111;'> 169.18KB </span>","children":null,"spread":false},{"title":"第三节二维声波方程有限差分法的建立.pdf <span style='color:#111;'> 470.69KB </span>","children":null,"spread":false},{"title":"第四节二维弹性波动方程有限差分法的建立.pdf <span style='color:#111;'> 160.03KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]