The Double Tourbillon is driven by twin barrels geared in line, one of which is equipped with a slipping spring so as to avoid any defect caused by excess tension on the mechanisms during winding.
立体陀飞轮由同心双发条盒驱动，其中一个装有减速弹簧，这样可防止在上链时由于过度张力导致的机件故障。
2
Get geared up for a double IP weekend, starting this Friday!
得到了一个双ip的周末，从这个星期五！
3
WT35-11 comes as an axial-flow roof fan that features low and medium levels of pressure and heavy wind flow and can be geared to the needs of blowing, exhaust and double-rotation reversible mode.