副基准

介绍了一种使用溴钨标准灯、烟熏MgO漫反射白板、国家光强度副基准及国家色温度副基准建立（50～500）cdm2亮度水平下光谱辐射亮度标准（380～780）nm的方法。

A method for realizing the spectral radiance standard with level ( 50 ~ 500 ) cd / m 2 is presented . It is based on the national secondary standards of luminous intensity and color temperature , halogen lamp and white diffusing plate smoked MgO .

中国直流电动势副基准的现状

The Present Condition of Secondary Standard of DC EMF in China

253.7nm辐射源总辐射通量副基准的建立

The Establishment of Secondary Standard for Total Radiant Flux of 253.7 nm Radiation Source

工频三相电能国家计量副基准和谐波计量标准的研究

Research on national secondary standard and harmonic standard of industrial frequency three-phase electric energy metrology

借此机会，中国测试技术研究院也将他们保存的两个国家公斤副基准砝码送来一起参与量值复现。

By that chance , another two pieces of National Secondary Standard Weights kept at National Institute of Measurement Technology were also joined in the measurement .

介绍了国际标准ISO16063-11激光干涉绝对法振动校准推荐的条纹计数法和正弦逼近法，在低频垂直向国家振动副基准的实现及进行的相关比对实验，分析研究比对结果数据。

This paper introduces fringe counting method and sine approximation method described in ISO 16063-11 Primary Vibration Calibration by Laser Interferometry . With the implementation of these two methods on vertical low-frequency acceleration standard of NIM , various comparative experiments have been performed .

针对新的国家颜色温度副基准，分别采用基于数学模型的精确方法、近似方法和几何方法对其不确定度进行了评价，并与传统方法进行了比较。

Accurate analytical method , approximate calculation , geometrical projection method and traditional method are discussed and compared , which are used to evaluate the uncertainty of the new national secondary standard of colour temperature at National Institute of Metrology ( NIM ) .

色度副载波基准频率基于DSP的短波跳频频率合成器的设计

Design of Frequency Synthesizer for Shortwave Band Frequency Hopping Based on DSP modulator carrier