An exact expression of energy release rate for geometrical nonlinear elastic fracture mechanics is obtained for an infinite plate with central crack under uniform stress normal to crack surfaces.

对含中心裂纹的无限大板在裂纹表面受均匀分布压力作用的情况，导出了几何非线性弹性断裂力学的能量释放率的一个精确表达式。

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The fracture of the electronic components is predicted through Comparing the experimental data of strain energy release rate.

对比能量释放率的试验数据，对电子元件的断裂进行了预测。

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The results show that using the encapsulated delayed release breaker may improve the proppant pack fracture conductivity and increase the cumulative oil and gas production capacity.

表明胶囊延迟破胶技术可显著改善裂缝导流能力，提高油气井产量。

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Fracking involves the injection of water containing a surfactant and various other chemicals under high pressure into a source rock e.g. shale, causing the latter to fracture and release natural gas (principally methane).

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The process involves pumping water containing small percentages of other materials into the porous shale under pressure to hydraulically fracture it and release the trapped oil and gas.

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Fracking uses high-pressure liquid pumped deep underground to fracture shale rock and release gas.

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