Another analogy is to the invention of the paperback book; by reducing the cost of books, it increased the demand for them.
还可以推论出另一点，平装书的发明；通过减少图书的成本，增加了对图书的需求。
2
Comparing with prior art, the invention possesses advantages of retaining toughness of material and reducing production cost besides raising performances of huge magnetic resistance.
该方法与现有技术相比具有提高巨磁阻抗性能的同时保持材料原有韧性，降低生产成本的优点。
3
The invention provides the joint drainage board type strain clamp capable of reducing maintenance processes, reducing maintenance cost and saving electricity consumption of equipment.