In this paper, a method of asymptotic integral is suggested for determining the periodical solution of a nonlinear equation. Examples are given.

本文提出非线性方程周期解的渐近积分法，并举例说明。

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So it'll be an effective solution to set up a patent evaluation system and periodical informing regulation. The practices on the system set up are discussed.

因而 ，在我国建立对专利成果 （科研成果 ）的有效评价体系和定期告知制度 ，无疑是解决信息渠道不畅和对项目认知难的有效途径。

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In view of the actual conditions of a large number of periodical inspection overdue cars being in operation, the causes are analyzed and the method of solution is given.

针对大量定检过期车在线运用的实际情况，分析其形成的原因并提出解决办法。

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