1) double deck casing head of gas injection
双层注气套管头
2) dual injection casing head
双层套管头
3) two concentric sleeve pipes
双层套管
1.
Based on the energy conservation law,an expression formula for calculating the wetness of flowing wet steam measured by heating method for directly heating two concentric sleeve pipes,which are thermally isolated and electrically insulated from each other,an instrument used for measuring wetness of the flowing wet steam has been designed.
提出了一种以能量守恒定律为基础,用于加热法测量流动湿蒸汽湿度的计算表达式,并以此设计了一种彼此同心、相互绝热和绝缘的双层套管直接加热的实现流动湿蒸汽湿度测量的仪器。
4) double cap casing head
双顶套管头
5) casing head gas
套管头气体
6) cement casing head
注水泥套管头
补充资料：注头
1.赌博时所押的钱财。
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参考词条