Average diameter is used in calculating certain percentages such as table size , total depth , crown height , and pavilion depth 平均直径是用来计算一定比例如表大小,总深度,树冠高度,亭深
Chapter 5 . ceoi nanoparticles of average diameter about 30 nm were prepared by sol - gel method in lower temperature 另外,我们用自制的纳米氧化怖粉末制备了以醋酸纤维素为母体的稀土元素离子选择电极。
The results showed that cubic , dispersed co3o4 nano - particles with average diameter of 20nm were obtained under optimize conditions 结果表明,在优化的制备条件下可得到分散性较好、平均粒径为20nm左右的立方相纳米co _ 3o _ 4粒子。
3 . the electrocatalytic activities of the pt / c catalysts with 20 % pt and different average diameters of the pt particles for the ethanol oxidation were compared 发现pt的平均粒径为3二urn的pw催化剂的催化活性最高,其次是38 、 4
As the stirring rate increasing , the average diameter of capsules decreases exponentially and its distribution turns narrow , but its polydispersity index increases 随着转速的增加,胶囊的平均粒径呈指数关系减小,分布变窄,多分散指数却增加。