A corrugated or perforated conducting plate in a storage battery.
极板网栅，蓄电池电极板蓄电池中呈波纹状或有孔的导电板
A detachable extension to the back of an envelope, having a perforated edge and special marketing information or an order form on it.
信尾信封背面可拆掉的附加部分，其上有打孔的边缘和特定的市场信息或订购单
In perforated continuous forms paper, the interval between cuts.
在穿孔的连续格式纸上，割线之间的间距。
