Aerospace and biomechanical engineers have long been aware of shape-memory alloys, but these materials have come to the attention of civil engineers only recently.
航太工程师和生物力学工程师很早就发现了这种记忆合金，但直到最近国内的工程师们才注意到这种材料。
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He suggests using electric motors or shape-memory materials to repeatedly flick the end of a flexible, wedge-shaped wing, creating a wave that ripples backwards and generates forward thrust.
Objective to design a new type of posterior lumbar interbody fusion cage made of NiTi shape-memory alloy and to evaluate its histological and biomechanical behavior through animal study.