Book sewing machine is one kind of book binding machines, by which the gathered signatures in paginal order from the collecting machine can be sewed to from book blocks.
锁线机是将配
机按
序已
册的书帖，通过锁线制书芯的机械。
的；由形的Book sewing machine is one kind of book binding machines, by which the gathered signatures in paginal order from the collecting machine can be sewed to from book blocks.
锁线机是将配机按序已册的书帖，通过锁线制书芯的机械。
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