Based on practical project,using the material of building,masonry models are made in laboratory. The correlation curve of strength and speed of sound for masonry mortar is set up by experimentation. According to the correlation curve R\|V of masonry mortar and the correction curve of ultrasonic\|rebound,the strengths of masonry mortar and structural concrete and measured by the non\|destructive method.
This paper presents the analysis and calculation for last stage based on the turbine power equation and the relation between the power and parameters under variable conditions,deducts equation of power variation and determines correction curve of condenser vacuum,which reveals that the practicability,accuracy and applicability of the calculation are further improved by considering the effect of variable conditions on thermodynamic(system) and correcting the unit output.
This article introduces the method in which the respective deviation resulted from the corresponding operation parameter's deviation can be achieved by using of the fair curve which is fitted with the data in the thermal test of the turbine.
The paper gives out the main parameters of the ridge waveguide, cut-off wavelength of the main module, the single module working band of the ridge waveguide, the characteristic impedance of the ridge waveguide, the power capacity of the ridge waveguide, the attenuation of the ridge waveguide, the completed calculation methods for the parameters and the correction curves of some parameters.
1.09μ is the most suitable wave length used for measuring minority carrier lifetime in silicon. 1.09μ infrared high frequency photoconductive decuy measuring technique is described in this paper. The distribution of nonequilibrium carriers excited by light pulse in silicon is obtained by bumerical calculation,and calibrated curve due to surface combination for semi-infinite sample is plotted.
Fission track annealing experiments for vermiculite mineral have been performed under optimised etching conditions and a correction curve translating track length reduction to track density reduction has been constructed.
The present investigations permit a generally applicable correction curve to be suggested for hot-wire velocity measurements close to walls of high thermal conductivity.
A scout view of the step wedges made of these equivalent tissues was performed to obtain a beam-hardening correction curve for each tissue.
The reaction of O2 with N2 and the subsequent decrease in N2 was only partly correctly using an O2 correction curve for the relationship between N2 and O2 concentrations.
The volume of nitrogen in the nitrometer can be measured directly without a levelling operation and reduction to the volume under atmospheric pressure is carried out by using a correction curve.