elastican.弹力(橡胶)elasticadj.灵活的；有弹性的；可变的n.橡皮圈；有松紧的东西elastic buffer弹性缓冲区elastic fibers弹力纤维,黄纤维elastic modulu弹性模量elastic liquid弹性液体elastic member弹性元件elastic clause弹性条款elastic-wave弹性波elastic center弹性中心elastic method弹性阶段设计法elastic ribbon橡筋带