A copper printing plate engraved or etched to form a recessed pattern of the matter to be printed.
铜凹版将所印刷的内容镌刻或蚀刻成凹版的印刷铜板
Cobalt salt was employed as catalyst precursors, copper plate as substrate and ethanol as carbon source.
剂先体 薄铜片作为基底制备碳纳米管。
Compared with the acid erosion, the copper plate engraving is nontoxic and can help to protect the environment.
铜版干刻技法，首先是它较之酸蚀的无毒，带来了环保的结果。
In copper engravings and etchings, the impression caused by the edges of the plate is clearly visible on the paper.
铜版画、雕刻，造成这样的印象是优势明显的板块文件。
CCMS RXL Mike Colver extra large, milled spade, billet Copper, Rhodium over Silver plate. One.25cable terminating hole.
研磨红铜大叉，镀银上镀铑，25线孔。
CCMS RXLL Mike Colver extra large, milled spade, billet Copper, Rhodium over Silver plate. One 25cable terminating hole.
研磨红铜加大叉, 镀银上镀铑, 25线孔。
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