本文提出一种将局部算法与扫描算法相结合的、用有限差分解程函方程求取地震波初至时间的方法。
A new technique is given here, which combines partial algorithm with scanning algorithm and obtains wave arrival times by solving eikonal equation with the use of finite difference method.
程维，1983年出生，是优步在中国的对手，滴滴快滴的首席执行官。这个交通行业的公司成立于2015年初，合并了程维的滴滴打车以及阿里巴巴的快的打车。
Cheng Wei (1983) is CEO of China's Uber rival Didi Kuaidi, a transportation company which was formed in early 2015 as a merge of Cheng's company Didi Dache and Alibaba's Kuaidi Dache.
程维，1983年出生，是优步在中国的对手，滴滴快滴的首席执行官。这个交通行业的公司成立于2015年初，合并了程维的滴滴打车以及阿里巴巴的快的打车。
Cheng Wei (1983) is CEO of China's Uber rival Didi Kuaidi, a transportation company which was formed in early 2015 as a merge of Cheng's company Didi Dache and Alibaba's Kuaidi Dache.
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