air blowpipe

用法例句

The technology uses deep penetration perforation charge with high perforation density and large perforation diameter and surging perforation with greater pressure differential.

它采用高孔密大孔径深穿透射孔弹和大压差抽吸炮眼清洗技术,不仅能提高油井产能,解除近井带污染,还可以改善防砂完井效果。