Following an introduction to the notion of quasi-associativeΩ-fuzzy ideals in BCH-algebras is intro- duced,their related properties are investigated,from which several equivalent depictions of quasi-associativeΩ-fuzzy ideals are obtained.

Study on physical simulation of chemical flooding in Lvda 10-1 Oilfield;

Hydro-geological condition physical simulation of the low rank coalbed methane reservoir formation;

DPIV physical simulation of melt flow in mould during continuous casting of aluminium alloy slab;

The formation and distribution of residual oil in meander point bar by physical modeling;

The main methods for studying the atmospheric environment in street canyons include field observations, reduced-scale physical models and mathematical models.