鞍点逼近法是一个非常有效的逼近工具，它可以获得密度函数和分布函数的逼近函数。
Saddlepoint approximations are powerful tools for obtaining accurate expressions for densities and distribution functions.
鞍点逼近法是一个非常有效的逼近工具，它可以获得密度函数和分布函数的逼近函数。
Saddlepoint approximations are powerful tools for obtaining accurate expressions for densities and distribution functions.
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