The invention relates to a copper particle reinforcedtype tin, silver and zinc composite solder and the preparation method.
本发明涉及一种铜颗粒增强型锡银锌复合焊料及其制备方法。
2
The invention relates to a silicon carbide particle reinforcedtype tin, silver and zinc composite solder and the preparation method.
本发明涉及一种碳化硅颗粒增强型锡银锌复合焊料及其制备方法。
3
The reinforcedtype steel heat-shrinkable finned rube is mainly used in such places which have complicated topography, bad weather and high grade of anticorrosion, and cross the rivers.