percentage reduction短语⁸⁴³²⁰⁺⁸ 基本例句 减少百分数 The tensile strength increases rapidly while the percentage reduction of area and elongation vary slightly with increasing strain rate and decreasing temperature at high strain rate. 高应变速率条件下，随着应变速率升高和温度的降低，抗拉强度迅速增长，而延伸率和断面收缩率变化较小； cnki