• (飞机的)对地速度

groundmassn.合金的基体groundn.地面；地方；根据；主题；立场；水平；背景v.使停飞；困在家中；放在地上；使 ... 搁浅；打基础动词grind的过去式和过去分词形式groundwater water chemical dynamics地下水化学动力学grounded base amplification circuit基极接地放大电路, 共基极放大电路Ground sweat cures all disorders.一死百病消。ground granulate blast furnace slag粒化高炉矿渣groundwater resources vulnerability地下水资源脆弱性ground-to-under-water missile地对水下导弹ground stereophotogrammetric survey地面立体摄影测量grounded-plate Bartley oscillator[电] 接地屏巴特雷式振荡器ground-based kinetic energy weapon动能武器ground granulated blast furnace slag矿渣微粉