boring hole

• 成孔

boring hole的用法和样例：

例句

1. The result shows that hemolytic toxin of Enterococcus is hole protein class hemolysin.
   提示，肠球菌溶血素为成孔蛋白类溶血素。
2. This paper introduces boring method of bored and bottom-enlarging mudjack pile in dry operation.
   本文简单介绍了干作业钻孔扩底桩的成孔处理方法。