| 分类号 |
C11D1/52;C11D1/62;C11D1/66;C11D1/72;C11D1/835;C11D3/00;C11D3/20;D06M13/02;D06M13/184;D06M13/188;D06M13/192;D06M13/224;D06M13/248;D06M13/252;D06M13/322;D06M13/402;D06M13/46;D06M13/463;D06M13/467;D06M13/47;D06M13/473;(IPC1-7):C11D1/83 |
主分类号 |
C11D1/52 |
