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一、引言准确测量空气密度直接关系到质量单位的正确传递。这种工作大都在实验室空气环境中进行,它们在赋值后仍需在空气中使用。物体在空气中要受浮力作用,其大小为:
I. Introduction Accurate measurement of air density is directly related to the correct delivery of quality units. Most of this work is carried out in the laboratory air environment, they still need to be used in the air after the assignment. Objects in the air to be buoyancy effect, its size: