给出了压铸机变频调速系统选型方案。

The choice of system scheme is presented.

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究其原因，很多在于企业没有科学地进行ERP系统选型。

Erp is hard to success for the reason that many enterprises do not use a scientific selection of erp system.

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给出了调速系统负载特性，改造的理论依据，改造过程及改造的设备系统选型。

It also gives the load characteristic of speed regulating system, the theoretical basis and practical process for alteration and selection of equipment.

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