彩票快三
<tr id='dCsVcQ'><strong id='dCsVcQ'></strong><small id='dCsVcQ'></small><button id='dCsVcQ'></button><li id='dCsVcQ'><noscript id='dCsVcQ'><big id='dCsVcQ'></big><dt id='dCsVcQ'></dt></noscript></li></tr><ol id='dCsVcQ'><option id='dCsVcQ'><table id='dCsVcQ'><blockquote id='dCsVcQ'><tbody id='dCsVcQ'></tbody></blockquote></table></option></ol><u id='dCsVcQ'></u><kbd id='dCsVcQ'><kbd id='dCsVcQ'></kbd></kbd>
类多晶金刚石微粉，是介于单晶金刚石和多晶金刚石之间的新型磨料。由单晶金刚石微粉采用特殊工艺加工制成，使其具有类似多晶特性的一种类多晶金刚石微粉。应用于大部分领域，代替多晶金刚石微粉。
