介绍了大型球铁齿轮的无冒口铸造工艺。
The feederless foundry method for a large ductile iron gear wheel was described.
精密铸造球铁齿轮，噪音低，耐磨度高，使用寿命长。
Precisely cast ductile iron gear has advantages of low noise, high abrasion resistance index and long service life.
对各种状态的奥贝球铁齿轮的弯曲疲劳强度进行了试验研究。
The bending fatigue strengths of ADI gears treated with different processes were test and compared.
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