材料金属制 用处锁紧后利用弹垫的弹性起到防松的作用. 弹介在机械.建筑.等领域应用广泛..起着不可缺少的作用. 一般和螺丝搭配使用.如图
电影里才有的地板钢琴，介个要用脚弹啦。
Walking piano featured in the movie Big is played by the user's feet.
在研究二维八面准晶体的物理性质中，介电、压电、弹性、光弹、拉曼和布里渊张量是很重要的。
In studying the physical properties of two-dimensional octagonal quasicrystals, electric susceptibility, piezoelectric, elastic, photoelastic, Raman and Brilliuin tensors are important.
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