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特种邮票
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特种邮票
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特种邮票
特殊用途或特殊作用的邮票。是新中国发行的纪念邮票和普通邮票以外的特定邮票,主要用来宣传特定事物。简称特票。
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group buying
group calculus
group calisthenics
group C* and von Neumann algebra
group [C* and von Neumann] algebra
group carry
group center
group character
group class
group climate
group closure
group closure of a subset
group code
group coded recording
group coded recording, GCR
group cohesion in sport
group cohesiveness
group cohomology
group communication
group commutator series
group companies
group company
group comparison
group completion
group completion of a commutative semigroup
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