belled pile

• 扩底桩

belled pile的用法和样例：

例句

1. 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。
2. The current viewpoints on the modifying coefficient problem of end-bearing resistance of large diameter belled piles are different.
   目前人们对大直径扩底桩端阻力折减问题有不同的看法。