main fram 中文意思是什麼
main fram
解釋
主林班線-
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 ）通過對掘進機工作原理和作業過程分析，研究在截割作業時截割頭的受力情況，為確定工作機構受力提供依據。
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