With this situation, any amount of axial load can be applied to compressivebar of arbitrary length without bending.
在此状态下可在任意长度的压杆上，加任意大小的轴向载荷，而不产生弯曲。
2
The opposite of elongation is upsetting, which produces compressive shortening. For example, the diameter of a bar can be increased by heating and hammering axially.
与伸长相反的是镦粗，即产生压缩性缩短。例如，棒料的直径可以通过加热和轴向锤击而增大。
3
The compressive pulses measured with PVDF gauges placed in aluminum and rock bar specimens are given too.