1)book-groove,书槽2)staple channel,书钉槽3)groove,书(脊凹)槽4)backed bone hinge, cloth joint, joint,书脊槽5)book hinge setting machine,压书槽机6)creasing the joint,压书脊槽
用法例句
According to the shape and production requirement of the staple channel part of the staˉpler and through the analysis of the technological process for the part,the design scheme of the die for fomring the part has been worked out.