The paper firstly introduces the status and trend of development of the packaging grain, and the necessity of improving and applying the technique for grain.

论文首先介绍了我国粮食包装的现状及其发展趋势，由此引出了粮食包装技术的开发、改进和应用在现代粮食销售包装的重要性和迫切性。

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During the course of forest management, it is important to grasp the status in quoin time and predict the development trend of forest resources for macro-management decision.

在森林经营过程中，及时掌握森林资源的现状，预测其发展趋势对森林资源的宏观经营决策和管理十分重要。

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Furthermore, the status in present and development trend of dynamical research of mechanism with clearance and chaotic vibration are discussed.

此外，对含间隙机构及混沌振动的研究现状与发展趋势也进行了一些有益的探讨。

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