permeable spur

• 透水丁坝

permeable spur的用法和样例：

例句

1. As a new fashion river regulation building, it is necessary to research the effect of pile permeable groins to local flow quantitatively.
   摘要作为一种新型河工建筑物，桩柱透水丁坝对局部水流的影响亟需可靠的定量研究。