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对原有的４９码编码规则进行了重新研制与变形．变形后的４９码保持了原有４９码的安全性和可靠性，克服了原４９码编码表相当庞大、查找数据慢等缺点，使其更具有实用价值．
On the original 49 yards coding rules were re-developed and deformed. After the deformation of the 49 yards to maintain the original 49 yards of security and reliability, to overcome the original 49 yards coding table is quite large, slow to find the shortcomings, so that it is more practical value.