一英尺有30.48厘米。1英寸=2.54厘米，而1英尺=12英寸。那么1英尺=1x12英寸=12英寸，12英寸=12x2.54厘米=30.48厘米。即1英尺等于30.48厘米。国际长度度量单位有毫米、[详细]
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