Brakes 3 Clutches (Machinery) 3 Flywheels Bearings (Machinery) 2 Couplings 2 Gearing 2 Machine design 2 更多 ... Materials 2 Riveted joints 2 Screws 2 Shafting 2 Springs (Mechanism) 2 Steam-boilers 2 Strains and stresses 2 Tolerance (Engineering) 2 Vibration 2 Welded joints 2 Actuators 1 Air conditioning 1 Air-compressors 1 Automatic control 1 Belt drives 1 Belts and belting 1 Bolted joints 1 Cams 1 Chains 1 Cold working 1 Columns 1 Combined cycle power plants 1 Combustion 1 少 ...