ground board meaning in Chinese

地面边界

• ground:     ground2 n. 1.地，地面；土地，地 ...
• board:    n. 1.板〔通常指宽4英寸半以上厚2英寸半以下者〕，木 ...

Examples

1. Crack control of large volume concrete of south airport building ground board of new baiyun airport
   新白云机场南航站楼底板大体积混凝土裂缝控制
2. 1 . diamond tools : diamond saw bit , diamond drill , grinder head , grinding board , caster and diamond compound turning tool
   一金刚石工具类：锯片钻头磨头磨块磨盘连铸三大件专用金刚石复合片刀具