：A 10n／1 n＝1，2，3，…… d．c ratio standard with about 1×10－8 error is designed． The standard is not as usual built by ten resistors with same resistance, it is built only by two resistors ,whose resistance are respectively R and 9R．The accuracy of this ratio standard is measured using the substitution method by the Hamon build－up resistor, and the error is about 1×10－8．The examples using the ratio standard is also described．

The paper introduces the experience of Longyangxia hydraulic power plant switch station's 330kV voltage mutual inductor error calibration by adopting the hydraulic turbine generator's excitation voltage as the test source,using the partial pressure capacitor,partial pressure zero set box,and the 110kV standard voltage mutual inductor as the capacitive voltage ratio standard device to realize three group bus voltage mutual inductor's error calibration.

Double level potential transformer of 35 kV with an accuracy of 0.001 were devebped successfully by North China Electric Power Research Institute, which reached the highest grade of 35 kV, and double level potential transformer of 110 /3~(1/2) kV with an accuracy of 0.002 were also developed successfully, which was the first one on the world.

Introduced the large direct current proportion standard self-calibration system,which the error ratio is(0.2～1)×10-6 and the measurement uncertainty is(1～5)×10-7.It can be obtained the trace to the source of large direct current with self-balancing DC comparator through self-calibration circuit,addition circuit,compare circuit and multiplication circuit etc.

The Sixth Research on the Reform and Consummation of China's Sci-tech Human Resource Development and Management System--Discussion on Reforming and Innovating the Post-structural Proportion Standard and Its Construction Work

Previous studies on adult populations have demonstrated that although the traditional ratio standard V?O2max (ml?kg-1?min-1) fails to render V?O2max independent of body mass, the ratio standard is still the best predictor of running performance.

Hence, the purpose of the present study was to investigate whether the ratio standard is still the most appropriate method of normalising V?O2max to predict 1-mile run speed in a group of 12-year-old children (n=36).

With both the V?O2max and body mass exponents being close to unity but with opposite signs, the model suggest the best predictor of 1-mile run speed is almost exactly the traditional ratio standard recorded in the units (ml?kg-1?min-1).

Clearly, reporting the traditional ratio standard V?O2max, recorded in the units (ml?kg-1?min-1), still has an important place in publishing the results of studies investigating cardiovascular fitness of both children and adults.

Values for b were 1.08 and 1.05 for BSA relative to Qmax and SVmax, approximating that of 1.0 using the traditional ratio standard (cardiac index and stroke index).

Hence, the power function ratio standards (ml·kg-2/3·min-1) and (W·kg-2/3) were best able to describe a wide range of subjects in terms of their physiological capacity, i.e.

The simple ratio standards (ml·kg-1·min-1) and (W·kg-1) were found to best describe the same subjects according to their performance capacities or ability to run which are highly dependent on body size.

The appropriate model to explain the experimental design effects on such ratio standards was shown to be log-normal rather than normal.

Therefore, we concluded that the ratio standards and allometric scaling should be employed to adjust S for body size when muscle torque and muscle force, respectively, are tested.

Muscle function (F) was normalised for LMM by using ratio standards (F·LMM-1), power function ratios (F·LMM-b, where b is usually?≠?1), and analysis of covariance (ANCOVA).

The methods of establishment and calibrations of 35kV and 110/1/3kV power frequency voltage ratio standards are described in this paper. The standard is a capacitive divider which is calibrated at low voltage by IVD and used at high operating voltages. Two voltage transformers, used as working standards, belonging to operating voltages of 35kV and HO/ 3 kV respectively are calibrated by the standard established. The results show that the accuracies of the calibration system of power frequency voltage ratio are...

The methods of establishment and calibrations of 35kV and 110/1/3kV power frequency voltage ratio standards are described in this paper. The standard is a capacitive divider which is calibrated at low voltage by IVD and used at high operating voltages. Two voltage transformers, used as working standards, belonging to operating voltages of 35kV and HO/ 3 kV respectively are calibrated by the standard established. The results show that the accuracies of the calibration system of power frequency voltage ratio are ±1.5×10-5 and ±5×10-5 for ratios of 35kV/100V and (110/3 kV) (100/3V) respectively.

This paper presents the application and expansion of the world-wide advanced technique about the rendition and adjustement of values measured by the methods, Such as.reference potential, transformers series addition, twice calibration and return bias, used in 110kV power-frequency voltage proportionality standard self-calibration system.

The classification of clastic sediments in the specifications for oceanographic survey issued by State Oceanic Administration of China in 1975,was widely accepted by Chinese marine geologists,and now Shepard's classification of clastic sediments is adopted in new specifications for oceanographic survey issued by State Technologic Supervisory Administration of China,Sand-silt-clav ratios in the two classifications are different. Nomenclature difference in the triangular composition diagram is 8.25%in area,Com-...

The classification of clastic sediments in the specifications for oceanographic survey issued by State Oceanic Administration of China in 1975,was widely accepted by Chinese marine geologists,and now Shepard's classification of clastic sediments is adopted in new specifications for oceanographic survey issued by State Technologic Supervisory Administration of China,Sand-silt-clav ratios in the two classifications are different. Nomenclature difference in the triangular composition diagram is 8.25%in area,Com- paratively speaking,the percentage of the second highest content of granulometric com- position plays an important role in the classification issued in 1975.