CBn.[化]元素钶(columbium)的符号abbr.民用波段(=citizens band)cbn(=central benign neoplasm) 中央型良性肿瘤,(=chemical, bacteriological, nuclear) 化学, 细菌和核的,(=chronic benign neutropenia) 慢性良性中性白细胞减少症

1. Base on the research of geological condition in Xinji mine, the content and procedure of well pattern design in CBM development are provided in the paper.
   摘要以新集矿区为例，系统地研究了煤层气开发井网设计的具体内容及工作程序。