CONCLUSION the dynamic state observation of TCD can monitor the condition of recanalization of blood vessel after cerebral infarction.
结论：经颅多普勒超声动态观察可监测脑梗死后血管再通的情况。
The research of approach to monitor bridge state has become a hot spot in the engineering through the theory of dynamic of structures and the test technology.
利用结构动力学原理和现代检测技术对桥梁进行研究已成为工程界所关注的热点。
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