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《Chinese Journal of Geophysics》 1988-01
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A CONCISE DERIVATION OF AN IMPORTANT TRANSFORMATION FORMULA IN THE STUDY ON THE GROWTH OF AN ELLIPTICAL CRACK

LI WEN-YI(Institute of Structural Theory, Tongji Univercity, Shanghai)  
In this paper, an important transformation formula in the study on the growth of an elliptical crackis derived concisely and exactly, where s is the parameter of Laplace transform, a is constant, k1 and k2 are components of the wavenumber vector k, u and v are rupture propagation velocity along the mutually perpendicular directions, respectively.
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