n.I型标;
例句:
When the pointer looks like an I-beam, release the mouse button.
当鼠标指针看起来象I的形状时, 松开鼠标按钮.
The same line can make I beam and T beam for shipping building.
在同一行可予梁和T梁的航运建设.
Steel I-beam bridge with timber floor.
工字钢 梁木面桥.