短语词组短語stiffen flow 粘滯流stiffen n 使僵硬;使硬stiffen plate 加強板stiffen concrete 勁性混凝土stiffen syrup 濃糖漿kidney stiffen 腎髒纖維化Stiffen Steel 鋼筋硬化stiffen ratio 剛度比Limbs stiffen 四肢僵硬 返回 stiffen