屏幕大小的计量方法是以计量屏幕对角线为准,计量单位是以英制的吋为单位。比如,屏幕的尺寸为55英寸,即指屏幕的对角线为55吋(英吋)。1英寸等于公制的2.54厘米,那么55英寸屏幕的对角线长为55X2.54=139.70厘米。
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