原理很简单：一个在之前的强地震中断裂的断层带，一旦再次聚集了足够大的压力后，将可能再次引发同等级别的地震。
The principle is simple: a fault segment that has ruptured in a large quake in the past will-once enough strain has again accumulated-likely fail again in a similar-size earthquake.
研究不同声波时差测井信息(变化幅度和异常范围)可以简单直观地定性判断断层的封闭性。
Therefore, the study of different acoustic logging information (abnormal changes in magnitude and scope) can be simple and intuitive qualitative judgment of the sealing ability of the fault.
结论采用分期断层皮片移植治疗耳廓大面积黑色素痣，方法简单，疗效可靠。
Conclu sion Treatment of large-sized auricular nevus through staged split -thickness skin grafting over perichondrium is simple and reliable.
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