美利体育登录入口官网:GOST R 8.711-2010
国家测量统一性保证体系.频率为1至78,33GHz的相对绝缘体电容率及损耗因数测量工具的国家验证表
State system for ensuring the uniformity of measurements. State verification schedule for measuring instruments of relative dielectric permittivity and the loss tangent in range of frequencies from 1 to 78,33 GHz