subsurface controlled subsurface safety valve的意思|示意
美 / /
英 / /
井下控制井下安全阀
subsurface controlled subsurface safety valve的网络常见释义
井下控制井下安全阀 ...井下控制井下安全阀 subsurface controlled subsurface safety valve 单线控制井下安全阀 singleline subsurface safety valve 地面控制井下安全阀 surface controlled subsurface safety valve ..