copper-coated造句

• Copper - coated steel strips for welded pipe
  焊管用镀铜钢带
• Since 1982 , the mint began making copper - coated zinc ( 9 ) pennies to prevent metals speculators from taking advantage of lofty ( 10 ) base metal prices
  1982年后，造币厂开始发行铜衣锌币来避免投机商从中牟利。
• Special metal material and products , such as high - hardness steel plate , copper - coated steel wire , copper - coated aluminum wire , bi - sn alloy , al - ti alloy , w - mo alloy , w - cu alloy , br - cu alloy etc
  特殊金属材料，包括超硬耐磨钢板、铜包钢线材、铜包铝线材，及针对特殊用途的合金材料和制品，如铋锡合金、铝钛合金、钨钼合金、钨铜合金、铍铜等。
• ( 1 ) first , metallizing abs plastics surface by chemical coarsing , metal ion absorption , metal ion reducing and chemical copper - plating . then , the copper - coating was thickened by electroplating in order to improve adhesion between following - coating and plastics matrix , and nickel was preplating . finally , ni - sic composite was plated
  ( 1 )通过反复实验，确定工艺流程：首先通过粗化、敏化、活化和化学镀铜，使塑料表面金属化，再电镀铜加厚铜镀层，增强后续镀层与塑料基体的结合力，然后预镀镍，最后电镀ni ? sic复合镀层。