"查查詞典"手機(jī)版
千萬(wàn)人都在用的超大詞匯詞典翻譯APP
- Utilization of network technology in changing the cage guide rope of shaft
網(wǎng)絡(luò)圖技術(shù)在更換立井繩罐道上的應(yīng)用 - Shaft sinking-abutment for guide ropes-safety requirements and testing
打豎井.導(dǎo)向鋼絲繩用支座.安全要求和試驗(yàn)