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1·The invention relates to a novel iron core for an electromagnetic voltage transformator and a building method thereof.

本发明涉及一种新型的电磁式电压互感器铁心及其搭建方法。

2·What are the costs of establishing such factory with approximately 500 workers for transformator, cable and insulators sections?

什么是成本建立这样一个工厂的工人约500用于变压器，电缆和绝缘体部分？

变压器

1·What are the costs of establishing such factory with approximately 500 workers for transformator, cable and insulators sections?

什么是成本建立这样一个工厂的工人约500用于变压器，电缆和绝缘体部分？