They consist of at least two large towers anchored to the ground, a roadway, and a web of steel cables strung between the towers and from each tower to the anchorages at either end.

• 它们由至少两座锚定在地面的大塔，一条公路和网状的排列在塔和从每一个塔与每一边末端锚定地点之间的钢缆绳组成。