◎ 圍巖 wéiyán
(1) [country rock;surrounding rock]∶某地區(qū)常見的巖石(指礦體周圍的巖石,有時也指巖漿侵入體周圍的巖石)
(2) [wall rock]∶為斷層脈所穿過的巖石;斷層脈或礦床側的巖石

1.{礦} wall rock; country rock; deads; surrounding rock