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.
线
是将配页按页码顺序已
册
书帖，
线制书芯
。
；由页形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.
线是将配页按页码顺序已册书帖，线制书芯。
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