They plopped this rod into a beaker of water and hit it with a laser beam from below .
他们让这个翼状杆落入盛有水的烧杯中,并用激光束从底部击中它。
And found that the rod moved upward and to the side-a sign of optical lift .
发现翼形杆向上移动并移到一边-视觉上飞翔的迹象。
An updated shaft drive - which replaces the chain with a rod and internal gear system - would be perfect for urban riders .
一个更新的轴传动装置代替传动杆链条和内啮合齿轮系统为城市骑手提供完美的座驾。
Using the same method , nathan scott hart at the university of western australia and colleagues scanned shark retinas for pigments linked with rod and cone cells .
Retinas use two main types of light-sensitive cells to allow animals to see : rod cells help measure brightness , while various types of cone cells help distinguish colors .