【摘要】 本文介绍了国际计量局组织的20～100MPa压力量值国际比对的概况。我国的比对结果十分令人满意。在中、美、英、法、日本、西德、意大利和捷克等8个比对结果较为一致的国家中,我国测量传递标准的活塞有效面积A₀值和压力形变系数λ值与8国测量平均值之差分别为12×10^-6和-0.02×10^-6[MPa]^-1,考虑传递标准随时间的变化并作了修正后的结果则分别为4.5×10^-6和0.04×10^-6[MPa]^-1,均优于估计不确定度。更多还原

【Abstract】 -The international comparison of pressure in the range of 20-100 MPa organized by the Bureau International des Poids et Measures (BIPM) is described. Differences between the values of the effective area and the pressure distortion coefficient measured by NIM and their mean values measured by 8 countries, Czechoslovakia, France, FRG, Italy, Japan, UK, USA and China, are 12×10-6 and -0.02×10-6 [MPa]-1 respectively. These results are within the limits pf the uncertainties estimated.更多还原