Mastering the Pin and Gauge Technique: A Comprehensive Guide

pin gauge 英[pin ɡeidʒ] 美[pɪn ɡedʒ] [词典] 销（栓）规 [例句]Some new patterns of downhole tools have been designed and developed， such as two-way shear pin packer， and electronic pressure gauge protecting carrier etc. 研制开发了双通道剪销封隔器、电子压力计保护托筒等一批新型井下工具。