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在度规系数为可分离和能量动量张量Ttt=Txx=Tyy=-σ(t,z)形式的假设下．得到Einstein场方程的三个新解，并研究了它们的对称性、奇异性等整体特性．We examine plane symmetric solutions to the Einstein equations under the assumption of func-tional separability of the metric coefficients. Under the further assumption that the energy-momen-tum tensor is of the form Ttt=Txx=Tyy=-σ(t,z), three new solutions are found, the global prop-erties of the spacetimes, such as their symmetries and singularities are investigated.
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