Proportion of solid colour fibres can be exactly predicted utlizing the least square calculating method.This colour matching result is matchable to spectrum.
A simple method for calculating the standard heats of formation of organic compounds containing carboxide using the inductive effect index is built up.
The method of calculating microstepping currents for variable reluctance stepping motor with equal microstep angle was described when motor torque characteristics were sinusoidal shapes.
The TD series electric which is made of straining sensor and microkit has the funcion of wiping offtare,addingup weight,giving an alarm of hitch amd calculating.
Streak cathod method which is a kind of qualitative method for measuring the innerstress of deposits was introduced.A semi-quantitative calculating formula for the innerstress was given.