bar conveyer meaning in English

格棒式分级运输机

It also introduces design theory about paver working characteristics and states design method and calculation formula for travelling , bar conveyer , screw conveyer , vibratory rammer , vibration screed , hydraulic system and electric system some empirical formulas and design parameters are presented
并完整地介绍了行走、刮板、螺旋、振捣、振动、液压、电气等系统的设计方法和计算公式，同时还推荐了一些经验公式和设计参数。