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ลำดับที่LC คำอธิบาย
Plumbing and pipefitting
Heating and ventilation. Air conditioning
Illumination. Lighting
Decoration and decorative furnishings
Architectural engineering. Structural engineering of buildings
Construction equipment in building
Protection of buildings Including protection from dampness, fire, burglary
Mechanical engineering and machinery
Machinery exclusive of prime movers
Machine shops and machine shop practice
Hoisting and conveying machinery
Lifting and pressing machinery
Agricultural machinery. Farm machinery
Sewing machines
Power resources
Energy conservation
Mechanics applied to machinery. Dynamics
Mechanical movements
Mechanical devices and figures. Automata. Ingenious mechanisms. Robots (General)
Control engineering systems. Automatic machinery (General)
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