特殊用法armature end slug1.(继电器线圈)衔铁端缓动铜环cold slug1.【工】注塑冷料copper slug1.继电器的缓动铜套heel end slug1.跟端缓动铜环(继电器线圈)hollow slug1.空心块interposition slug1.插入铁芯land slug1.蛞蝓slug in neck1.瓶颈过厚(玻璃瓶缺陷)