three-piece construction

• 三件式结构

three-piece construction的用法和样例：

例句

1. The elastomer pinch sleeve shall be one piece construction with flanges, drilled to be retained by the flange bolts.
   人造橡胶夹管套管应该是一件式结构，并带法兰安装孔，以便固定法兰螺栓。
2. The hanging buckled type steel pipe scaffold has already found a widespread application in the extra-high building construction.
   摘要悬挑扣件式钢管脚手架在超高层建筑施工中已经得到广泛的应用。