The introduction and demonstration application of photinia serrulata in Beijing area were carried out.

开展了石楠在北京地区的引种和示范应用。

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This article presents a general introduction to this innovative feature and a step-by-step demonstration of how Web service developers can take advantage of it.

本文对这项具有革新性的特性做了一个大概的介绍，并且开发者会在这个一步步的演示中获益。

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An introduction to the working principles of solar energy and a demonstration of how it is used.

介绍太阳能电池工作原理，演示太阳能的利用。

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Torfaen is one of six areas where the Department of Work and Pensions is running what it calls "demonstration projects" ahead of the introduction of the UK government's flagship welfare reform of Universal Credit in the autumn.

BBC: Roofs