电解铜盘条: electrolytic co er wire rodelectrolytic copper wire rods
印痕: impression; imprint; print; dimple; mark; trace 短语和例子拖拉机履带在泥土上留下的印痕 the impress of a tractor's tread on the mud; 印刷良好的书籍有明显而清楚的印痕。 the well-printed book has a sharp, clean impression
