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.

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。

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Conclusion CT scanning may help to diagnose partial patients with clinically suspected BTC but the definite diagnosis needs to differentiate from bronchogenic lung cancer.

结论CT扫描有助于部分具有典型征象BTC的诊断，但仍需与支气管原性肺癌鉴别。

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Influence of CO2 partial pressure on corrosion scale of P110 steel in stimulated oil field environments was investigated by using scanning electron microscopy(SEM) and x-ray diffraction(XRD).

利用高温高压釜设备辅以失重法、采用扫描电子显微镜（SEM）和X射线衍射（XRD）技术，研究了在动静两种状态下CO2分压对P110钢腐蚀产物膜的影响。

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