raise boring machine
常見例句
- Some Speed lifting Systems of domestic raise-boring machines are described. Based upon an analysis of their functions, some recommendations for their improvement are proposed.
本文介紹了國(guó)內(nèi)天井鉆機(jī)的幾種快速升降系統(tǒng)及其作用并對(duì)其進(jìn)行了分析，提出了改進(jìn)建議。 返回 raise boring machine