精品国产午夜一区二区三区,亚洲天堂综合婷婷丁香五月,好吊妞人成视频在线观看强行 ,思思久久精品无码_人妻中文乱码在线网站_亚洲日韩中文字幕一区_国产日韩综合一区在线观看

Yttrium oxide
Yttrium oxide
Detail
Mainly used for manufacturing microwave magnetic materials for military use and important materials (single crystal; yttrium iron garnet, yttrium aluminum garnet composite oxide, etc.) are also used as fluorescent powder and other high brightness CRT glass coatings, ceramic materials, additives, big screen TV optical. Also used in the manufacture of film capacitors and special refractories, as well as high pressure mercury lamps, lasers, storage devices, such as magnetic bubble material.
Scan QR codeClose