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在漫长的铸币史上,各国的硬币虽然型制和图案千姿百态,但基本上还是遵循着圆形为主的原则,不管钱币的面值多少,总是以圆钱的大小、厚薄和重量的不同而有所区分。在实物货币时代,钱币的重量是决定钱币面额的关键因素,因为那些用贵金属打制的货币其重量
In the long history of coinage, the coins of various countries, though of different shapes and patterns, basically follow the principle of roundness. Regardless of the denomination of coins, they always have the size, thickness and weight of the circle of money The distinction. In the real money era, the weight of the coin is a key factor in determining the denomination of the coin because the weight of the currency that is made of precious metal