Noun:

1. (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded

groundedadj.(情绪上)稳定的；[计算机] 接地的动词ground的过去式和过去分词形式.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groundedbaseadj.基极接地的ground holds跪撑groundreturnn.地回路ground judge角裁判ground speedn.地速；飞机相对地面的水平速度ground works土方工程ground burst地面爆炸ground check地面检查ground plans地籍图ground alertn.戒备状态；进入戒备状态之信号