[網(wǎng)絡(luò)] 擴(kuò)孔鉆;巖心鉆機(jī);薄壁空芯鉆頭 core drills-technical requirements: 擴(kuò)孔鉆技術(shù)條件drills: 電動(dòng)手操作鉆孔器; 斜紋布; 鉆孔機(jī); 鉆頭conversational drills: 瘋狂英語口語絕招-句型經(jīng)典drills practice: 句型操練electric drills: 電動(dòng)鉆孔機(jī)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯