delta metal

名词 n.
中文释义

英文释义

名词 n.
  1. A brass alloy consisting of copper (55%), zinc (41-43%) and iron (1-3%), with the balance consisting of various other metals. The proportions used make the material harder and suitable for valves and bearings. uncountable

词源

The three metals are symbolised by the triangular (delta) shape.
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