韧性rènxìng 1.物体受外力作用时,产生变形而不易折断的性质。{resilience; toughness; tenacity; property of a material that changes its form but does not break under stress} 2.指顽强持久的精神{persistence; tenacity}: 工作任务越艰巨越需要～。{The more arduous the work becomes, the more tenacity is needed.}