n.可延展性；延伸度；可锻性；韧性
Two important working properties of metals are ductility and malleability. 延展性和可锻性是金属的两种重要加工性能。
Metals are elements that can be defined by their properties,such as ductility,toughness,malleability,electral and heat conductivity,and thermal expansion. 金属是根据可锻性，刚性，可塑性，电热导通性以及热膨胀度等特征来定义的多种元素的复合物。
A bend test is a simple test for ductility that does not require special equipment, or a specially shaped test-piece. 弯曲试验是测试韧性的简单试验，不要求特别的测试设备，或规定形状的试样。
