活塞轴作线圈的衔铁.A shaft on the piston forms the armature of a coil.N是软铁的衔铁.N is armature of soft iron....

“衔铁”的拼音为：xián tiě...

“衔铁”的英语可以翻译为：[电] armature，anchor，armature iron，reed，gag bit ...