延伸度的英文：
ductility
n. 展延性;柔软性;顺从
- 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。
