CBn.[化]元素钶(columbium)的符号abbr.民用波段(=citizens band)CBM resources煤层气资源CBM evaluation煤层气评价CBM extraction煤层气排采CBM desorption煤层气解析CBM production产气量cbemical fiber化学纤维Cbolecystectomy经自然腔道手术Cbolecysteetomy胆囊切除术CBERS CCD image中巴地球资源卫星CCD影像CBERS satellite中巴卫星