顶辊 meaning in English

toroll

On the up - roll . . . fire
瞄准顶辊…开火！
On the up - roll . fire
瞄准顶辊开火！
The forward axis and the back axis use a uniformity fluid system . except the motors and the pipelines of the two system , the others parts are consisted of a single mobile power station . this is a one advantage of fluid drive system comparing to mechanical drive system
压榨机顶辊采用单独的一套液压系统，前后辊合用一套液压系统（主要是共用液压油箱），将上述两个液压系统组合成一个可移动的模块式动力站，这种模块化的结构也是液压驱动系统对比机械传动系统的优势之一。