The parameters of two peen formings are analyzed. At the end, the paper also compares and analyses two technologies in all aspects.
论述了这两种喷丸成形技术的原理、特点和发展趋势，并对它们的工艺参数进行了分析和比较。
2
The redox conditions in coal-forming environment are the important factor affecting the organic geochemical characteristics and the hydrocarbon-formings potential of coal.