higher dimensional space-time;
Einstein’s field equation;
Wyman’s solution;
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Ⅰ. INTRODUCTIONIn recent years, on account of the development in superstring theories (which require the background space-time manifold to be (1+9)dimensions )and the application of the Kaluza-Klein theory to the research of the very early plaases of the universe (1+10) dimensional space-time), some theoretical physicists have displayed much interest in the