The drilling machine for DJM piles has the advantases of small volume,convenient opperation,easy material resource,high construction speed and operation in a small space.是什么意思_The drilling machine for DJM piles has the advantases of small volume,convenient opperation,easy material resource,high construction speed and operation in a small space.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句