Its movingiron core transformer structure is most widely used.
动铁芯式变压器结构，应用最广。
2
There is some dirt or debris on the membrane, it is blocking the movingiron core.
有杂质吸附在膜片上，动铁芯有卡死现象。
3
It does not cost much to scrape it up, and the expense comes in moving costs from mine to market. Even so, Australia can produce iron ore for $25 a tonne.