Wearing test in laboratory and test in production show that service life of repaired parts is over two times longer than the new ones, and the work cost decreases by 49%-77%.
室内磨损试验及生产试验均证明了修复零件的使用寿命比新品提高一倍以上，作业成本降低49% - 77%。
It decreases die cost and increases production efficiency. The characteristics of die structure, work principle and DE - sign gist of every procedure are introduce further.
降低了模具成本，提高了生产效率，并进一步介绍了各成形工序的模具结构特点、工作原理及设计要点。
Compared with the prior art, the amount of the oxyful in use is greatly reduced, and the production cost remarkably decreases.
与已有技术相比，双氧水用量大为下降，生产成本明显下降。
Compared with pair trawling, it increases the single net production for 40 to 45 per cent and lowers the cost and decreases the Labour intensity. It improves the economic efficiency.
经一年来生产试验证明产量增加明显，与同马力双船拖网相比，平均单船网产增加40 ~ 45%。
Compared with pair trawling, it increases the single net production for 40 to 45 per cent and lowers the cost and decreases the Labour intensity. It improves the economic efficiency.
经一年来生产试验证明产量增加明显，与同马力双船拖网相比，平均单船网产增加40 ~ 45%。
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