延展性是物质的物理属性之一，指可锤炼可压延程度。易锻物质不需退火可锤炼可压延。可锻物质，则需退火进行锤炼和压延。脆性物质则在锤炼后压延程度显得较差。物体在外力作用下能延伸成细丝而不断裂的性质叫延性，在外力（锤击或滚轧）作用能碾成薄片而不破裂的性质叫展性。
延展性
n. ductility ; malleability
双语例句原声例句
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尽管受到尊敬，但古人很快就认识到黄金的实用性，尤其是它的延展性，这使它成为制作珠宝的理想材料。
Despite their reverence, the ancients were quick to recognize gold's practical qualities, particularly its malleability, which made it ideal for jewelry.
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银是所有金属中延展性最好的。
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下降的岩石比周围的地幔的温度低很多，因此延展性较小，更容易断裂。
The descending rock is substantially cooler than the surrounding mantle and hence is less ductile and much more liable to fracture.
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We can still say it's the same personality, the same evolving personality so longer as there is some kind of a pattern of overlapping continuity.
我们还是可以说是同样的人格，同样的不断进化完善的人格,拥有重叠性和,延展性。
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So you don't have ductility, which is what you have in metal.
所以材料不具备延展性，而且金属中有自由电子。
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But it's as long as the right kind of overlapping continuity, same personality.
但只要它是符合重叠延展性的,就是同样的人格。
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