Special instances of plastic flow are cold flow, which occurs in vulcanized rubber after low stress has been continuously applied for a long time, and creep of metals.
塑性流动的特殊情况是冷变形，发生在硫化橡胶长时间连续承受低应力时以及金属蠕变时。
2
The properties of the amalgams of spherical powders, such as dimension change during hardening, compressive strength, flow and creep meet the specification No.
球粉汞齐的性能，诸如固化过程中的尺寸变化，压缩强度，流变及蠕变等均达到美国牙医协会技术指标。
3
The main reason of casing failure in most oilfields is the plastic flow in salt rock, gypsolyte and shale due to creep.