The rotors one point grounded protection adopts variable electricity bridge principle and can reflect transition resistor better.
转子一点接地保护采用变电桥原理，增强了反应过渡电阻的能力。
Generally speaking, the bridge structure incorporating the flexible arch principle in material mechanics can disperse every point of pressure to the cross-section equally.
通俗地讲，运用材料力学的弹性拱原理造桥，这种结构就可以将受力点的力分散到桥的每一个横截面上。
The design of the bridge is carried out in the eight-character principle of "safety, pratically, economically and aeshetic" by comparing and choosing the best one.
对该桥的设计，本着“安全、实用、经济、美观”的八字原则，本设计提出三种不同的桥型方案进行比较和选择。
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