APPLICATION OF GUIDED-BORING TECHNOLOGY OF PNEUMATIC DOWN-THE-HOLE HAMMER IN MEGALITHIC AND COARSE-SAND SEE RECLAMATION是什么意思_APPLICATION OF GUIDED-BORING TECHNOLOGY OF PNEUMATIC DOWN-THE-HOLE HAMMER IN MEGALITHIC AND COARSE-SAND SEE RECLAMATION在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句