The structural design, design parameters, material chosen and manufacture process of multi-pinhole compound die of main printed circuit board for large screen color TV are introduced.
介绍大屏幕彩色电视机主印制板多小孔复合模的模具结构、设计参数、材料的选用和制造工艺等。
2
Methods of producing natural color cotton polyester compound yarn in cotton spinning equipment are introduced through principle of compound spinning yarn.
介绍了在棉纺设备上，通过复合纺纱原理，生产彩色棉涤纶复合纱的方法。
3
Grain color selector with photoelectricity technology, is used to detect and separate the bad works from the grain compound, based on the differences of color and shape.