Generally speaking, the invention of technology is the materialization of scientific knowledge and experiential knowledge, so that the theory and knowledge which can be applied can be realized. The development of modern technology and the guidance of scientific theory have become the "application of science" to a great extent. However, the development of modern science is also inseparable from technology, which often becomes the aim of scientific research, and the development of technology provides the necessary technical means for scientific research. There is a relationship between them, mutual promotion and mutual restraint. Predictably, their connections will become more intimate and boundaries will blur
Standard Insulating Materials Used in Electrical Engineering.
Secondly, in case you are really going to try and repair that scratched DVD then there's nothing strange, technical or mystical in regards to the process. DVDs, CDs and Game Discs are produced from a hard clear plastic called polycarbonate. The repair of scratched DVDs is not a lot more than an exercise in polishing or re-surfacing a bit of polycarbonate plastic. So should you are feeling somewhat nervous about attempting it. . . relax!
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