(或稱為公分), = 10 mm = 0.3937 吋. decimeter, 公寸, = 0.1 米. foot (簡寫為ft), 呎 (或稱為英尺), = 12 吋 = 0.3048 m = 30.479 cm, 以前曾採用1 ft = 0.3041 m, ...
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