hopper structure造句

例句与造句

1. Meanwhile the influences of a hopper structure on the flow patterns of wet materials are different from dry materials . usually the critical open diameter of a hopper for dry particles is more than 3 times of particle diameter , but not less than 4 times for wet particles . for dry particles , the hopper angle which causes transformation from funnel flow into mass flow is about 45
   同时料仓结构参数对干湿颗粒流动特性的影响也存在一些明显的差异：对于干颗粒，满足不结拱的料仓开口度尺寸至少为颗粒直径的三倍，而湿颗粒则要求料仓开口度至少为颗粒直径的四倍；干颗粒由漏斗流向整体流转换的角度在45度左右，而湿颗粒的转换角度为40度左右。
2. It's difficult to find hopper structure in a sentence. 用hopper structure造句挺难的