frusta
n. 平截头墩（frustum 的复数）
例句
The inlet has two types: the usual trumpet type and the changed ellipse frusta type.
泵吸入口有通常的喇叭形或改进的椭圆导流墩两种。
In case of bad weather or other unpredictable reasons, underwater break of steel tube stake of steam-ferry dock supporting frusta might be happened.
渡轮遇到恶劣天气或其它不可测因素而导致汽渡码头靠墩钢管桩水下断裂情况的发生。
Considering the structural characteristics, the bellows was idealized as a series of conical frusta elements with two nodes, joined at nodal circles.
根据旋转波纹管的特点，用两节点旋转锥壳单元将波纹管离散化，单元与单元之间以节点圆相连接。
