The nonexistence theorem of radial positive solution, sufficient conditions of oscillation and boundedness of radial solution and estimation for bounded solution are given in this paper.

给出了问题径向正解的非存在性，解的振荡性及有界性的充分条件，并对有界解进行了估计。

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Furthermore, a continuation theorem for stochastic functional differential equations of Ito-type is given by using stochastic analysis technique and the quasi-boundedness condition.

其次，利用随机分析技巧和拟有界条件，建立了伊藤随机泛函微分方程解的延拓定理；

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Furthermore, a continuation theorem for stochastic functional differential equations of Ito-type is given by using stochastic analysis technique and the quasi-boundedness condition.

其次，利用随机分析技巧和拟有界条件，建立了伊藤随机泛函微分方程解的延拓定理；

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