It is shown that the interface linear graded DBR has the minimum roughness and better surface morphology, which can be used in the fabrication of vertical cavity surface emitting lasers.
结果表明，相同周期数情况下线性渐变dbr相对于其他两种结构粗糙度最小，具有良好的表面形貌，可以应用于垂直腔面发射激光器的研制。
Graded materials may also be used with a gradient from a 100% concentration of ceramic at one surface, and gradually changing into a 100% metal at the other surface, would be advantageous.
也可使用梯度从一个表面处陶瓷浓度为100%逐渐变化到另一表面处金属浓度为100%的级配材料，这将是有优势的。
The raisin has different size and complicated surface, so it couldn't be graded well only by color and naked eyes.
葡萄干大小不一，表面情况复杂，单纯依靠颜色特征或用肉眼判断，均达不到较好的分级效果。
Calcite or marble is crushed, graded, and surface treated to be all kinds of technical natural calcium carbonate with different fineness. It is widely used in rubber, plastic, paint, and paper.
以方解石、大理石经超细粉碎、分级得到系列不同细度的重质碳酸钙，再经表面处理制得重质活性碳酸钙。
Considering the features of the construction of this line specific requirements are specified in the filling such as filling with fine earth, coarse mountain surface soil and graded crushed stones.
结合秦沈线施工特点，具体指出路基采用细粒土、粗粒山皮土和级配碎石几种具有代表性填料进行填筑的技术要求。
Methods: Surface, center deep infiltration part of 35 OSCC cases were graded respectively (WHO grading1971). To observe where there were differences of pathological grading between these parts.
方法：通过分别对于35例口腔鳞状细胞癌表面区、中心区、深层浸润区进行WHO病理分级，观察、评估不同区域的病理学分级是否存在差异。
Methods: Surface, center deep infiltration part of 35 OSCC cases were graded respectively (WHO grading1971). To observe where there were differences of pathological grading between these parts.
方法：通过分别对于35例口腔鳞状细胞癌表面区、中心区、深层浸润区进行WHO病理分级，观察、评估不同区域的病理学分级是否存在差异。
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