1、[计]低位穿孔
... underpunch标下孔 underpunch低位穿孔 underrun欠运转 ...
2、下部孔
... underproof不合格的 underpunch下部孔；低位穿孔 underquenching淬火不足 ...
3、标下孔
... underlyingtable基础数据表 underpunch标下孔 underrun欠运转 ...
4、基础数据表
...底线 underlying carrier基础数据表 underpunch标下孔 underrun ...