九. 中国印章(Chinese Seal) A seal can also be defined as a stamp. Both the Chinese official and private seal of various dynasties have different titles, such as stamp, zhu note, contract, fu, lease and others. The seals used by the emp...
Combined seal for end plate of housing of roll crusher The utility model discloses a combined seal for an end plate of a housing of a roll crusher, which comprises a shaft sleeve, a hold-down plate, a gasket, t... 冯治国,徐靖,李安平,... 被引量: 0发表: 2010年 Design of monitoring...