1. marine heavy metal pollution 
   海洋重金属污染
2. A metal chemically resembling platinum, especially osmium, iridium, or palladium. 
   铂系金属化学上类似于铂的金属，尤指铖、铱或钯
3. a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium. 
   一种重而脆的铂属金属元素，用于制合金，与铂或锇形成天然合金。
4. In the case of platinum, this process has the added advantage that it wastes very little metal. 
   对铂来说，这种加工方法还有另一优点，即损耗金属极少。
5. a heavy load; lead is a heavy metal; heavy mahogony furniture. 
   重担；铅是重金属；沉重的桃木家具。

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• 1. 铂族重金属
  铂钨合金||platinum tungsten alloys...铂族重金属||heavy platinum metal...铂阻温度计||platinum resistance thermometer
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