综述多孔陶瓷的类型与特性、制备的原料与方法以及表征多孔陶瓷孔特性的参量；
The categories and characteristics, the raw materials and methods of preparation and the parameters of characteristic pores of porous ceramic are reviewed.
参量过程是制备压缩态光场的最有效方法之一。
Optical parametric process is one of the most effective way of generating squeezed light.
结果表明，在梯度涂层中，随着组成成分的变化，热机械性能参量与制备应力均相应变化。
The results show that, in graded coatings, parameters of thermal mechanical behavior and fabrication stress change with the compositions.
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