double-thrust bearing
对向推力轴承，对向止推轴承

• coil
• coiled filament
• coiled-spring winding knob
• coiled tube
• coilidar
• coil in
• coil of wire
• coil out
• coimage
• coincidence
• coincidence circuit
• coincidence counting
• coincidence focometer
• coincidence prism
• coincidence rangefinder
• coincidence-reading device
• coincidence spectroscopy
• coincidence spectrum
• coincidence vail
• co-invariant
• CO lasers
• colcothar
• cold bend
• cold cathode
• cold cathode emission