System of postal-zone codes (zip stands for "zone improvement plan") introduced in the U. S. in 1963 to improve mail delivery and exploit electronic reading and sorting capabilities.
1963年美国为了便于邮件的分拣和投递而采用的邮政编号制。
System of postal-zone codes (zip stands for "zone improvement plan") introduced in the U. S. in 1963 to improve mail delivery and exploit electronic reading and sorting capabilities.
1963年美国为了便于邮件的分拣和投递而采用的邮政编号制。
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