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仿印邮票
邮政部门为集邮展览、集邮活动、集邮品制作等仿照已经停用的早期珍罕邮票,重新制版印制的“邮票”。由于明文宣告是仿印,在其票幅、纸质、刷色、齿孔、暗记等细节上与真邮票有所区别,有的在仿印邮票票背上印有“仿制品”字样。
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second differential parameter
second differentiator
second distance
second dual
second dual module
second dual space
second economics adjustment of China
second eigenfunction
second electron emission
Second Emperor of Qin Dynasty
Second Empire of Brazil
second factor
second fall-line
second Fermat point
second field free region
second field-free region
second field free region (2nd FFR)
second field-free region (2nd FFR)
second filial generation
second five-year plan of China
second form of barycentric Lagrange interpolation formula
second fundamental form
second fundamental quantity
second fundamental tensor
second fundamental theorem
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