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计量单位在人类社会活动中涉及面广,且与社会的经济、文化等方面息息相关,更是进行科学技术工作的基本手段之一。当今科技事业迅猛发展,计量单位的精确化和统一化就成为必然的要求,也越来越显示出其重要性。世界上许多国家都有各自的法定计量单位。长期以来,由于多种计量单位制
Unit of measurement involves a wide range of activities in human society, and is closely related to the social and economic, cultural and other aspects, but also one of the basic means of scientific and technological work. With the rapid development of science and technology, the precise and uniform measurement of units of measurement has become an inevitable requirement and has increasingly shown its importance. Many countries in the world have their own legal units of measurement. For a long time, due to a variety of measurement system