When A is a nonnegative definite matrix with finite maximum eigenvalue, the strong convergence of random quadratic forms is established under finite fourth moment.是什么意思_When A is a nonnegative definite matrix with finite maximum eigenvalue, the strong convergence of random quadratic forms is established under finite fourth moment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句