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断裂传播；裂缝延伸
1、propagation required───需要传播
2、bugleweed propagation───小蜂繁殖
3、calcaneal fracture───[医] 跟骨骨折
4、propagation delay───[通信]传播延迟
5、electrotonic propagation───[医]电紧张传播由膜的被动电学特征所决定的、仅在局部（几毫米之内）形成的电传播
6、expectation propagation───期望传播
7、fracture strain───断裂应变
8、fracture───vt.使破裂；n.破裂，断裂；[外科]骨折；vi.破裂；折断
9、propagation───n.传播；繁殖；增殖
1、A new method for calculation of fracture propagation───一种新的断裂计算方法
2、The average fracture propagation velocity is estimated with a series of crack gauges glued on the specimen.───裂纹传播平均速度由黏接在试样上的一系列裂缝计测量得到。
3、During the refracturing process, monitoring fracture propagation is important to ensure the success of the job.───在重复压裂过程中，裂缝扩展动态监测是保障作业能否成功的关键。
4、Numerical simulation of fracture propagation of rock under uniaxial tension───岩石单轴拉伸PoHuai过程的数值模拟
5、The results indicate that natural fractures exert great effect on hydraulic fracture propagation, at random to some degrees.───研究发现，天然裂缝显著影响水力裂缝的延伸，天然裂缝性地层中水力裂缝的延伸具有一定的随机性。
6、Acoustic Emission (AE) and Computerized Tomography (CT) scanning are important means to monitor the coal and rock fracture propagation.───声发射技术和CT扫描技术是监测煤岩体裂纹扩展的重要手段。
7、Sand-gravel Reservoir; Hydraulic Fracture; Fracture Propagation; True Triaxial Test; RFPA Numerical Simulation;───砂砾岩；压裂；裂缝延伸；大型真三轴实验；RFPA数值模拟；
8、Numerical Simulation of the multiple radial fracture propagation during the high energy gas fracturing is significant in the study of mechanism.───数值模拟是高能气体压裂径向多裂缝延伸机理研究的重要内容。
9、During fracture propagation driven by detonation gas in oil well, dynamic response of crack surface under the gas pressure results in fast fracturing.───油井爆生气体对岩石劈裂作用过程，是裂缝面对动态荷载响应并使其发生动态扩展的过程。