需要离开线路板安装的组件在线路板表面利用引脚形状或其它机械支撑来防止焊盘的翘起。
Components required to be mounted off the board are provided with lead forms at the board surface or other mechanical support to prevent lifting of solder land.
制作的装饰板自重轻，易于安装，造型古朴美观，表面光滑，强度高，结实，经久耐用。
Furthermore, the decorative board has the advantages of light weight, easy installation, old-fashioned and beautiful appearance, smooth surface, high strength and toughness and long service life.
一项新性能使其能在天花板和墙壁上齐平安装或表面贴装。
A new feature allows flush or surface mounting on ceilings and walls.
结果表明 ：该工艺镀液稳定 ，可用于电子元器件以及表面安装器件、印制电路板等铜基上化学镀锡。
It can be used for electroless tin plating on copper substrate in electronic element, surface mounting device and PCB.
结果表明 ：该工艺镀液稳定 ，可用于电子元器件以及表面安装器件、印制电路板等铜基上化学镀锡。
It can be used for electroless tin plating on copper substrate in electronic element, surface mounting device and PCB.
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