Taken the state monitoring system for forging machinery during producing process as example,the influence factor is studied for the drift rate of the automatic zero circuit.

This paper adopts the local time of slave node and the arrival timestamps,from the reference server,to create offset trend equation,and a mathematic model of clock drift rate is created by a method of linear fit.

This paper gives the dynamic equations of vibratory wheel silicon micromechanical gyroscope and their motion law, analyses drifts of the gyroscope,when vehicle rotates around any axis uniformly.

This paper focuses on analysis of the causation,the mechanism and the hazard of a frequency shift.

Oven controlled crystal oscillators are used widely in PD radars for high stability,but there are frequency shift during the warm-up time which is about 5 to 10 minutes.

A simple expression is obtained for pressure induced frequency shifts in the resonator,which is examined for design optimization.

In order to study the temperature rising and the frequency shifting problems during the operation of the ultrasonic motor(USM),the frequency-temperature characteristics of the USM were analyzed.

The definition of frequency drift for atomic clock is first presented.

In this paper,we analyze the cause of generating frequency drift that has more harm to the VSAT communication system.

This paper brings forward arithmetic which locate stationary emitter with frequency hopping and frequency drift using angle and frequency measurements.

An observation and analysis of heart rate drift of football players during constant running both at sea level and at altitude;

The heart rate drift phenomena occur to a different extent in all subjects (footballers) during steady endurance running either at the sea level or at the altitude, but the heart rate indexes at the altitude was higher than those at the sea level.