此外本文还给出了严格非负定条件下实正态过程存在的一个充要条件。

Besides, this paper gives a sufficient and necessary condition of the existence of normal process under the strictly nonnegative definiteness condition.

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讨论了L-非负定矩阵的广义B-D逆的代数扰动问题，并给出了它的代数扰动表达式。

In this paper, the algebraic perturbation theory of generalized B-D Inverse of L-nonnegative definite matrix is discussed. and the expressions of the algebraic perturbation are presented.

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令人啼笑皆非的是，这种控制计划的成功要对疟疾的卷土重来负一定的责任。

Ironically the success of the control programs is partly to blame for the resurge nce of malaria.

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