Wheel dressing is an important part of grinding, it influences not only the grinding quality ofthe workpiece,but also the cost of grinding.At present the single
In order to improve the surface adhesion of high strength and high modulus poluethylene (PE)fibers with epoxy resin,graft polymerization of some monomers by elect
Based on the mathematical model of Fourier Heat Conductivity Equations, this paper firstchooses an alternating-direction-implicit (ADI) type of finite differenc
The representative azo and anthraquinone dyes containing an insulated hindered piperidinegroup were synthesized.The effect of these pendent groups on lightfastn