ground die[机] 磨制螺模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ground conttolled approach地面控制进场groundwater discharge area地下水出流区,地下水流出面积ground-distance relaying接地距离ground-based observation地面观测ground truth investigation地面实况甸ground- source heat pump地源热泵ground supporting capacity地基承载力groundwater inrush pathway突水通道ground-to-air datalink地空数据链ground-air communication地空通讯