二调数据库中分子分母标注方法为： 表达式如下： "<und>"& [TBBH] &"</und>" &vbnewline& [DLBM] "<und>"&[DLBM]&"</und>" &vbnewline& [DLMC]  "<und>"& [TBBH]& [QSDWMC]  &"</und>" &vbnewline& [DLBM]&  [DLMC]  "<und>"