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物理单位作为物理量的组成部分,有着举足轻重的作用。任何一个物理数据只有数字而无相匹配的物理量单位,则该数字就仅仅是一串阿拉伯数字的组合,只表示某事物的多少或是大小,没有一点物理意义
As an integral part of physical quantities, physical units play a decisive role. Any physical data that has only numbers but no matching units of physical quantity is simply a combination of Arabic numerals that only indicates how much or what a thing is, without any physical meaning