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A1_A2_A3_A4纸的尺寸

A1,A2,A3,A4纸的尺寸;像素换算;ABC号纸尺寸 A4纸的尺寸是210mm*297mm,也就是21.0cm*29.7cm,而1英寸 =2.54cm,当分辨率为72像素/英寸时,我们将其换算成像素 /厘米就 是28.3,现在,我们将其转换为制作图片时的像素就是(21*28.3)* (29.7*28.3),即:595*842(单位为像素); 同样的道理,我们可以得到: 当分辨率为300像素/英寸时,A4大小是2479*3508像素; 当分辨率为120像素/英寸时,A4大小为1487*2105像素。 所以如果你要将做的图片打印出来的话,最好先进行换算,不然很可能 会降低图片质量的!一般情况下,如果是印刷品,最好用300像素/英 寸,如果是打印机或者喷绘,可以选择72像素/英寸的分辨率。 A0=1189*841mm A1=841*594mm A2=594*420mm A3=420*297mm A4=210*297mm A组 A0 841×1189 mm A1 594×841 A2 420×594 A3 297×420 A4 210×297 A5 148×210 A6 105×148 A7 74×105 A8 52×74 A9 37×52 A10 26×37 B组 B0 1000×1414 mm B1 707×1000 B2 500×707 B3 353×500 B4 250×353 B5 176×250 B6 125×176

B7 88×125 B8 62×88 B8 62×88 B9 44×62 B10 31×44 C组 C0 917×1297 mm C1 648×917 C2 458×648 C3 324×458 C4 229×324 C5 162×229 C6 114×162 C7 81×114 C8 57×81 DL 110×220 C7/6 81×162 A组纸张尺寸的长宽比都是1:√2,然后舍去到最接近的毫米值。A0定义 成面积为一平方米,长宽比为1:√2的纸张。接下来的A1、A2、A3……等 纸张 尺寸,都是定义成将编号少一号的纸张沿著长边对折,然后舍去 到最接近的毫米值。最常用到的纸张尺寸是A4,它的大小是210乘以 297毫米。 B组纸张尺寸是编号相同与编号少一号的A组纸张的几何平均。举例来 说,B1是A1和A0的几何平均。同样地,C组纸张尺寸是编号相同的A、 B组纸张的几何 平均。举例来说,C2是B2和A2的几何平均。(此外, 日本有一种不兼容的B组纸张尺寸,是用算术平均而不是用几何平均来 定义的。) C组纸张尺寸主要使用于信封。一张A4大小的纸张可以刚好放进一个C4 大小的信封。如果你把A4纸张对折变成A5纸张,那它就可以刚好放进 C5大小的信封,同理类推。


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