相互配合零件公差之和小于或等于装配允许偏差，零件完全互换。
The sum of the parts of the mating parts is less than or equal to the allowable deviation of the assembly.
然而，尽管货币互换协议并不意味着完全自由兑换，却是朝着自由兑换迈出的重要一步。
Yet while the swap arrangements do not signal full convertibility, they are an important step in that direction.
当然，不应该把货币互换与人民币完全自由兑换混为一谈。
Certainly the swaps should not be mistaken for full yuan convertibility.
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