The method of sulfomethylation modification of bayberry tannin extract was investigated.研究了毛杨梅栲胶的磺甲基化改性方法.Evident ancient treasure of the bayberry.足见古时对杨梅的珍重.Forever that also grows the not big grape, always red bayberry...
Some galleries commemorate donors by inscribing their names on the walls.一些美术馆把捐赠者的姓名镌刻在墙上以示纪念。They kept records by inscribing words on those materials.他们在这些材料上刻字来记录信息.At the end, we built experimental installation for i...
To protective material used in surfacing and finishing flake off.用于保护表面材料的涂层或保护层因失去黏附力而剥落,脱落.For surfacing welding on cold die and cutting tool.冷冲模及切削刀具的堆焊.A new type of maraging steel metal powder cored wire for die TIG...