液体密度计量仪器广泛地应用于工业、农业、交通运输业和科学技术的各个部门中,随着我国国民经济的日益发展,必将愈来愈显出其更大的作用。液体密度量值的一致准确和测量仪器的正确使用,对于和液体密度计量有关的部门的生产和工作来说,有着一定的意义。这里就密度的基本概念、测量方法和仪器、单位的复制和量值的传递等问题,简单地作一介绍。一、密度的基本概念人们在日常生活中都有这样的经验:同体积的二个物体,如铁块和木块,它们的重 Liquid density measuring instruments are widely used in various sectors of industry, agriculture, transportation and science and technology. As our national economy continues to grow, it will surely become more and more significant. The consistent accuracy of the liquid densities and the correct use of measuring instruments have implications for the production and operation of the departments involved in the measurement of liquid densities. Here is a brief introduction to the basic concepts of density, measurement methods and instruments, the duplication of units and the transmission of values. First, the basic concept of density People in our daily lives have this experience: the same volume of two objects, such as iron and wood, their weight