​​​​​​​​​​​​PQ3538变压器骨架​​​​​​​​​​​​​磁芯PQ3537电木骨架磁芯​​​​​​​​​​​​​​​PQ35磁芯骨架​​​​​​​​​​​​​​​PQ3538立式双槽磁芯​​​​​​​​​​​​​​​​​​PQ3536 core