"After years of painstaking research scientists work together to tackle key problems, and finally cultivated" calabash pear states, "This pear new varieties."
经科研人员多年潜心研究，合力攻关，终于培育出“蠡州大鸭梨”这一鸭梨新品种。
2
The keyto gain high yield should choose those varieties with mean filling rate and maximum filling rate to be quick from middle or middle late materials.
生产上选择增重速率及最大增重速率较快的中熟或中晚熟品种和材料是获得高产的关键。
3
Generator pole, which has many varieties and complex shape, is the key accessory of automobile generator and has strict limit in its size and quality, so it is difficult to produce.