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ускоритель схватывания цемента stresses
mining.	accelerating chemicals
O&G	accelerator
O&G, casp.	concrete hardener (Yeldar Azanbayev; a sealer that protects underlying concrete from damage caused by chemicals and contaminants - ничего не ускоряется и не схватывается Farrukh2012)
O&G, oilfield.	cement setting accelerator
oil	cement hardener; cement setting accelerator