The types, structures and properties of porous ceramic materials are reviewed in this paper Some techniques of preparation of porous ceramics that have proved to be successful are analyzed.
评述了多孔材料的类型、结构、性质，对目前应用比较成功的几种制备技术进行了分析，并介绍了多孔陶瓷广阔的应用前景、研究进展和未来的研究方向。
Depending on the level of detail of test ideas a mapping can be found in the choice of test techniques in the Preparation phase or in the specification of test cases in the specification phase.
取决于测试思想的详细程度，这种映射可以在准备阶段中的测试技术选择中或在规格说明阶段的测试用例规格说明中发现。
Has knowledge of all food items concerning ingredients, cooking techniques and preparation.
熟悉所有菜的配料烹饪方法及准备工作。
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