stretched spring
... stretched film 单轴向拉伸薄膜 ; 定向拉伸薄膜 ; 拉伸膜 ; 伸缩膜 stretched spring 拉紧弹簧 stretched fiber 拉伸纤维 ...
tension spring
... tension specimen 抗拉试件【测定抗拉强度的试件】 tension spring 拉紧弹簧 tension strength 抗拉强度、抗张强度 ...
stretched ring
... stretchedside紧边 stretched ring拉紧弹簧 stretchedtip伸展翼梢 ...
dual spring tension adjustment