main fram meaning in English
主林班线
Examples
- The main fram is designed . every mechanism " s location and how to joint them are analysised . ( 2 ) by analysis of the working principium and process of the roadheader , the cutter " s driving forces are investigation
( 2 )通过对掘进机工作原理和作业过程分析，研究在截割作业时截割头的受力情况，为确定工作机构受力提供依据。