美利体育登录入口官网:GOST 8.018-1982
ГСИ 测量温度在90K~180OK的固体的温度线值膨胀系数器具的国家一级基准器和国家检定系统
State system for ensuring the uniformity of measurements. State primary standard and state verification schedule for means measuring temperature coefficient of linear expansion in the range from 90 to 1800 K