厘米 分米 米 公里分别用什么字母表示
千米: km (kilometer)百米: hm (hectometer)十米: dam (decameter)分米: dm (decimeter)厘米: cm (centimeter)毫米: mm (millimeter)微米: µm (micrometer)纳米: nm (nanometer)。...
千米: km (kilometer)百米: hm (hectometer)十米: dam (decameter)分米: dm (decimeter)厘米: cm (centimeter)毫米: mm (millimeter)微米: µm (micrometer)纳米: nm (nanometer)。...