In view of problems of bad precision and anti-interference ability existed in PWM control system of DC motor based on single-chip microcomputer and being difficult to meet with requirement of real-time performance existed in PWM control system of DC motor based on DSP, the paper proposed Extra Heavy Duty a design scheme of PWM control system of DC
The association between stress and gastrointestinal (GI) tract diseases is well established, Extra Heavy Duty while the exact mechanism remains elusive.As a result, it is urgent to establish mouse models to investigate restraint stress-associated GI leakage, but current models have their limitations.A new Evans blue-fed restraint mouse model has re
To meet the requirements of the crab growth environment regarding aquatic plant density and improve the efficiency of aquatic plant clearing, this paper shows the development process of a fully automatic Upper Console Cover aquatic plant combing machine for crab farming.It proposed the use of torsion spring hooks to replace traditional cutting blad
Abstract The signing of the Regional Comprehensive Economic Partnership agreement brings new opportunities for the development of international air transportation.Faced with fierce competition, it is worth studying how hub airports should enhance competitiveness, and how low-cost carriers and full-service carriers Gift Set should optimize the RCEP
Abstract Understanding the characteristics of drawing body shape is essential for optimization of drawing parameters in longwall top coal caving mining.In this study, both physical experiments and theoretical analysis are employed to investigate these characteristics and derive a theoretical equation for the drawing body shape along the working fac