the opening in a derrick (derrick window) with the shape of an inverted

the opening in a derrick (derrick window) with the shape of an inverted: General subject: V-door (that is located opposite the drawworks and above the pipe rack on a drilling rig . The V-door is used to pull drillpipe or casing from the pipe racks onto the drill floor.)

Игры ⚽ Поможем решить контрольную работу

List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have … Wikipedia
Shawn Michaels — Ring name(s) Sean Michaels[1] Shawn Michaels Billed height … Wikipedia
painting — /payn ting/, n. 1. a picture or design executed in paints. 2. the act, art, or work of a person who paints. 3. the works of art painted in a particular manner, place, or period: a book on Flemish painting. 4. an instance of covering a surface… … Universalium

Словари и энциклопедии на Академике