The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction.
根据扫描断口形貌和裂纹扩展途径的金相观察，还探讨了在混合溶液中的应力腐蚀机制。
With consideration of the extension of fracture after shut-in, this paper proposes a method for defermination of fracture parameters using shut-in decline curve.
本文根据压裂施工停泵后裂缝仍有延伸的问题，提出了一种利用压裂后压降曲线早期段求解裂缝参数的方法。
Within the range of test temperature, the factors controlling the toughness are fracture loads, the lengths of fibrous crack, and the energy absorbed by each fibrous crack extension.
在试验温度区内，控制韧性的因素是断裂载荷、纤维裂纹长度和单位纤维裂纹扩展能量。
Intelligent diagnosis and treatment system for fractures is an important extension of medical robot for fracture resetting.
骨折智能诊断与治疗系统是医用整骨机器人的重要组成部分。
On the basis of summarizing testing effects, the extension of crack and the breaking mechanism of top coal caving in steep seam have been analyzed by applying fracture mechanics theory.
在总结现场试验效果的基础上，应用断裂力学理论分析了急倾斜煤层巷道放顶煤顶煤破断裂纹的扩展和破碎机理。
And it is though that adjusting the fracture fluid properties reasonably and combining the proper process measures can control the fracture height extension in hydraulic fracturing effectively.
合理调整压裂液性能，并结合适当的工艺措施，可以有效控制水力压裂裂缝高度延伸。
Multilayer fracture model usually make up of flow distribution model and single fracture extension model.
多层压裂裂缝延伸模拟模型主要是由流量分配模型和单裂缝延伸模拟模型两部分组成。
The authors conclude that spondylolysis is mainly the fatigue fracture due to locally increased stress and is contributing most by backward extension of lumbar spine.
作者认为，椎弓峡部裂实质上主要是由局部应力增高而引起的疲劳骨折，而腰椎后伸与其关系最为密切。
Fracture toughness (Kc). Critical value of the stress intensity factor for which crack extension occurs.
断裂韧度(Kc)：发生裂纹扩展时应力强度因子的临界值。
Methods:75 cases of extension type supracondylar fracture of humerus were treated with multilayer splintage.
方法：采用多层夹板固定治疗75例伸直型肱骨髁上骨折。
The parameters mentioned are defined for the first time, such as the ratio of pore pressure and upper formation pressure, the fracture extension grads, etc.
孔隙压力流体评价方法所涉及到的孔覆比和裂缝延伸梯度等参数均为首次定义。
This result supports previous fracture models that are based on absolute reaction rate theory and predicts an exponential dependence of crack extension rate on applied stress intensity.
此结果支持了基于绝对反应速率理论的光纤断裂模型，并预测了裂纹扩张速率与外部应力强度的关系。
The methods to prevent fracture extension are discussed.
讨论了利用人为因素控制裂缝延伸的方法。
Theoretical study shows that the crack extension under shear loading is caused by tensile stress, and it does not belong to shear fracture.
理论分析证明，在剪切载荷作用下裂纹扩展是由于拉伸应力引起的，并非剪切破坏。
The extension length of rock compression and shear fracture nucleus of the earth's crust is discussed, and it is verified by in-situ findings of geological investigation.
探讨了地壳岩石压剪断裂核的延深长度，并借矿床地质调查的成果加以实证。
Numerical method for crack extension analysis based on fatigue fracture process of rock materials;
工程控制爆破 ，要研究岩石的定向断裂的裂纹扩展。
Although it is hard to avoid the sources of fracture, the longitudinal fracture failure on the box joint can be prevented if proper measures are taken to prevent further extension of the fracture.
虽然裂纹源很难避免，但如果能够阻止裂纹的扩展，也能够防止钻杆内螺纹接头纵向开裂失效。
The movement and breakage of top coal, especially its internal micro-fracture extension, are closely related to the movement regularity of its immediate roof and main roof.
顶煤的运移与垮落，尤其是内部微观裂隙的扩展，与其直接顶和老顶岩层的活动规律密切相关。
In elective extension osteotomies, the surgeon manipulates the head to generate osteoclasis, temporarily producing an unstable cervical fracture.
择期进行后伸截骨术时，医生持住患者头部进行“折骨”，临时造成不稳定颈椎骨折。
Abstract: Fracture failure of junction crank arm of external cylinder retraction-extension actuator of landing gear of Y-7 aircraft is analyzed in this paper.
对运七飞机起落架外筒收放作动筒连接摇臂的断裂损伤失效进行了分析。
Abstract: Fracture failure of junction crank arm of external cylinder retraction-extension actuator of landing gear of Y-7 aircraft is analyzed in this paper.
对运七飞机起落架外筒收放作动筒连接摇臂的断裂损伤失效进行了分析。
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