collapsible drum是什么意思

用法例句

This article is intended for brief introduction structure of mandrel in the coiler of AnShan Steel 1780 mm temper mill, a new type of calculation method on mandrel radial pressure and calculation on diameter of mandrel expanding-collapsing cylinder.

简要介绍鞍钢1780mm平整机组卷取机卷筒结构、一种新的计算卷筒径向压力的方法及卷筒涨缩缸直径的计算。

A method of determining the parameters of the reel expanding cylinder;

卷取机卷筒涨缩液压缸参数确定方法