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ceci n'est pas une pomme
 
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Ingegneria meccanica: Industria petrolifera

English
mast (en) clicca per ingrandire
Part of speech Noun
Grammatical label Countable
Definition A portable type of derrick, which is pivoted at its base and is lowered to the horizontal by use of the drawworks after completion of the hole. It dismantles into a number of pin-jointed sections, each of which is one truck load.
Definition source Ode85
Context A drilling mast is normally used in land drilling where the complete rig must be moved to a different location after completion of each well.
Context source Ode85
Synonym portable derrick
Subject field Petroleum Engineering
Comprehensive concept hoisting system
Partitive concept leg, girt, brace
it mast
Reliability code 3



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