en long production string (n)
― IsA ⟶
Weight: 1.0
en production tubing string (n) Source: OpenCyc 2012
en production tubing string (n)
― IsA ⟶
Weight: 1.0
en production tubing (n) Source: OpenCyc 2012
en short production string (n)
― IsA ⟶
Weight: 1.0
en production tubing string (n) Source: OpenCyc 2012