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邮政史
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邮政史
Encyclopedia
工学
〔交通史〕
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postal history
邮政史
邮政发展的历史。邮政是依赖实物传输网进行书面通信和快速送达小件物品的系统。“邮”指通信方式和组织,“政”指由国家政权进行统治。数千年来,绝大多数邮政系统为政府运行。至今,邮政大力发展,已经具有通政通民通商的特征,也是国民经济运行不可或缺的行业。
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on duty arrangement of hydropower station
one-act play
One and Eight
one and only one
one-armed antibody
one-armed router
One-Armed Swordsman
one-aside network
one atom at a time chemistry
one-atom-at-a-time chemistry
one bath dyeing process
one bath two steps dyeing
one-bill coverage system
one boat purse seine fishing
one-boat seining with bagnet
one-boson exchange potential
one-boson exchange potential, OBEP
one-button alarming commanding system
one carbon unit
one cell stage
one class learning
one compartment model
one-component plasma
one-component system
one-connected
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