不一样，是不同的标准。Ax或者Bx是国际标准，Letter是美国标准。准确尺寸是：A4= 210mm × 297 mm Letter= 216mm × 279mm （8.5X11英寸）letter size是纸张尺寸的一种，主要应用与美国、墨西哥和加拿大等国家。
Well, it's all about the size – and that's what we're here to talk about. We'll break down the differences between A4 and Letter sizes, explain where and why they're used, and even introduce you to a nifty printer that can make your life a whole lot easier. So, if you're re...
在IEEE的WORD模板上看到有这两个size，求问一下如何判断需要用这两个中的哪一个？
2013-02-28 20:34:22 看期刊的作者指南是怎么要求的，如果没有选择哪个都行。好，谢谢！
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for a design or layout to fit safely on both sheet sizes it must be no wider than A4 and no longer than Letter. Put another way, the limits for a design or layout which will fit safely on either page size are the width of an A4 sheet (210mm or 8.27˝) and the length of a...
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