求翻译：魅动共振音响的技术中的这种的动力是来源一种特殊物质，它叫Terfenol-D ?是一种磁致伸缩材料。它能在一个磁场里表现出一定的可预测和可重复性的特点。磁致伸缩的特点是导致某些铁磁材料在磁场内改变形状。Terfenol-D能够产生“惊人的”磁致伸缩-收缩性比其他任何商用智能材料更大。在晶体中，由于磁场的应用，磁畴旋转时，以微秒的速度，进行适当的，积极的和可重复的扩张。是什么意思？

Dynamic resonance phantom sound in technical this source of power is a special material, calling it a Terfenol-D? is a magnetostrictive material. It can in a magnetic field, show some characteristics of predictable and repeatable. Magnetostriction of ferromagnetic materials is characterized by some within the magnetic field changes shape. Terfenol-D to have a "staggering" of magnetostrictive-shrink more than any other business intelligence material. In Crystal, due to the application of the magnetic field, magnetic domain rotates a microsecond speed, proper, positive and repeatable expansion.