艺术家们使用铜作材料,是因为铜是延展性最好的金属之一。
Artists use copper because it's one of the most ductile metals.
克拉黄金(一般混入铜)有一定的延展性,但是比纯金的延展性低一些。
The carat gold alloys generally have good ductility although less than that of pure gold.
铜具有良好的导电性、导热性、耐腐蚀性和延展性等物理化学特性。
It has good electric and heat conductivity, is able to endure causticity.
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