Thee 'Top Chain' requires no tensioner pulley due to the eccentric Bottom Bracket.
在'顶链'不要求拉紧滑轮由于偏心中轴。
2
Our flag is raised to the top of a pole by a rope and two pulley.
我们的旗帜被用一根绳子和两个滑轮升到了竿顶。
3
Then the structural accident of total section drive-through type crack is caused in arch frame top chord, which is induced by hoisting and detection using pulley arbitrarily.