延伸度的英文：
ductility

The purest gold is the most ductile.
纯金最韧(大丈夫能屈能伸)。

The purest gold is the most ductile
最纯的金最柔软

It is necessary to elaborate on the definition of a fatigue coefficient such as that for ductility.
有必要对疲劳系数，如延性系数的定义作详细讨论。

Ductility allows a metal or alloy to be drawn into a wire.
延展性使金属或合金能被拉成丝。

Ductility allows a metal or alloy to be drawn into wire
延展性使金属或合金能被拉成丝。