If there is no friction at all in this bar, then...

若这棒上没有摩擦力，那么。

youdao

In this paper, friction field distribution between sliver and pressure bar on a homebred drawing frame is analyzed, and on this basis, the best range of contact arc is deduced.

本文以国产并条机为例，分析了并条机上须条与压力棒上摩擦力界的分布，并进一步推导出了须条对压力棒包围角度的最佳范围。

youdao

ZJ044 type shot blast cleaning machine is suitable for surface rust removal and strengthen of engine connecting bar, gear, shell cover wall, clutch friction part.

齿轮轴、炮弹壳内外壁、离合器摩擦片、盘齿及其它零件的内外表面的表面清理和强化。

youdao