-
9889.
Hydraulic machinery
Subjects
Water powerHydraulic engineering
-
9890.
Hydraulic measurements
Subjects
Hydrography
-
9891.
Hydraulic mining
Subjects
Mining engineeringHydraulic engineering
-
9892.
Hydraulic mosaics
Subjects
Tiles
-
9893.
Hydraulic structures
Subjects
Hydraulic engineering
-
9894.
Hydraulic turbines
Subjects
Turbines
-
9895.
Hydraulics
Subjects
MechanicsFluid mechanics
-
9896.
Hydrides
Subjects
Hydrogen
-
9897.
Hydrocarbon reservoirs
Subjects
-
9898.
Hydrocarbons
Subjects
Organic compounds
-
9899.
Hydrochloric acid
Subjects
Inorganic acids
-
9900.
Hydrocolloids
Subjects
ColloidsGums and resins
-
9901.
Hydrocortisone
Subjects
Glucocorticoids
-
9902.
Hydrocyanic acid
Subjects
Inorganic acidsDisinfectants
-
9903.
Hydrodynamics
Subjects
Fluid dynamicsHydraulic engineeringMechanicsAnalytical mechanicsFluid mechanics
-
9904.
Hydroelectric power plants
Subjects
Electric power-plantsWater resources development
-
9905.
Hydroformylation
Subjects
Chemical reactions
-
9906.
Hydrogen
Subjects
Nonmetals
-
9907.
Hydrogen as fuel
Subjects
Fuel
-
9908.
Hydrogen bomb
Subjects
Nuclear weaponsBombs
-
9909.
Hydrogen bonding
Subjects
Molecular association
-
9910.
Hydrogen peroxide
Subjects
DisinfectantsPeroxides
-
9911.
Hydrogen-ion concentration
Subjects
-
9912.
Hydrogenation
Subjects
Chemical reactions
Last updated dated: 15/11/2025