| 单词 | vee-door | 
| 释义 | vee-door in the Oil and Gas Industry (vi dɔr) Word forms: (regular plural) vee-doors  noun (Extractive engineering:  Field development, Drilling)   A  vee-door is the opening shaped like an upside down V in one side of a derrick, which allows long pipes and tools to be lifted onto the rig floor.  All the long pipes came in through the vee-door.  The riser is constructed in sections about 50ft long, and these sections can be broughtin through the vee-door of the derrick.  A vee-door is the opening shaped like an upside down V in one side of a derrick, which allowslong pipes and tools to be lifted onto the rig floor.  | 
	
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