求翻译：美国流通硬币共有1分、5分、10分、25分、半元、1元6种面额，美国历史上曾有6位著名总统的头像分别出现在这6种面额的硬币上。但是因为种种原因，在1981年美国重新发行小美金1元（直径为26.5毫米，比半美元外径还小些），图案换成美国女权运动活动家苏珊·安东尼的头像。是什么意思？

1 U.S. coins in circulation points, 5 points, 10 points, 25 points, half of a dollar, six kinds of denominations, had six well-known president of the picture in the history of the United States, respectively, in the six kinds of denominations of coins. But for some reason, in 1981, the United States

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The American circulation coin altogether had 1 minute, 5 minute, 10 minute, 25 minute, the semicircle, 1 Yuan 6 kind of currency values, in the American history once has 6 famous president's head pictures to appear separately in on these 6 kind of currency value coin.But because of all sorts of reas

United States coins in circulation total of 1 min, 5 min, 10 min, $ 25, half, 1 6 denominations, United States history, there have been 6 famous presidential portrait appears on in 6 denominations of coins. But, for various reasons, in the 1981 United States again issued US $ 1 (diameter 26.5 mm, sm

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