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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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negative electrode/cathode
negative electron
negative electron affinity photocathode
negative element
negative emotional processing
negative energy
negative energy state
negative energy states
negative energy wave
negative entropy
negative entropy flow
negative excess coefficient
negative exponent
negative exponential distribution
negative eyepiece
negative feedback
negative film
negative flower structure
negative formula
negative frequency-dependent selection
negative function
negative fundamental sequence
negative glow
negative gradient
negative growth of population
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