backup roll
... 小轴钳;套筒:collet 小支书撑辊;背辊:backup roll 小叶杨:Populus simonii ...
back flow roll
... back flow roll 背辊 ; 小挤水辊 back-roll 反绕 ; 回原地再起动 ; 倒卷 back kiss roll 反面接触舔液辊 ...
backing roll
... backing roll spot 背辊痕(纸病) backing roll 小挤水辊;背辊 backing 纸坯 ...
back roll
... back rest后梁 back roll背辊 back side反面 ...