短語詞組短語sliding g friction torque 滑動摩擦力矩sliding g friction 滑動摩擦;滑動摩擦力sliding -friction gravity conveyer 滑動摩擦重力式輸送機sliding metallic friction 金屬滑動摩擦static sliding friction 靜滑動摩擦pre -sliding friction 預(yù)滑動摩擦sliding friction and wear 滑動摩擦磨損 返回 sliding friction