例句與造句

1. No back - stays & inclined pylon cable - stayed bridge is a new one . she has very prominent mechanical characters that it substitutes the deadweight of inclined pylon for the back stays force to counteract the girder deadweight of main - span
   無背索斜塔斜拉橋結構體系新穎,其最大的受力特點是利用傾斜索塔的自重來平衡主跨主梁上的恒載和活載,而省去了背索及其索力。
2. It's difficult to find back stay in a sentence. 用back stay造句挺難的