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Subject: rig mast area, polyethylene film/bitumen slat combination Пожалуйста, помогите перевести.
rig mast area, polyethylene film/bitumen slat combinationВыражение встречается в следующем контексте:
COMPANY well locations are constructed using a gravel/sand base and a surface of 3 x 1.5 m concrete slabs. The level of the Rig-mast area is typically 20 cm below that of the rest of the location and lined with a polyethylene film/bitumen slat combination underneath the concrete slabs
Заранее спасибо
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