partial color blindness
部分色盲，二色视觉

• series triggering
• series winding
• series wound dynamo
• serration
• serration plug ga(u)ge
• serviceability
• service life
• service manual
• servoamplifier
• servocontrol
• servocontrolled scanning interferometer
• servo-control mirror
• servo-control system
• servodrive
• servodyne
• servo EE finder
• Servofrax
• servomechanism
• servomotor
• servo response rate
• servoscribe recorder
• servo stabilization
• servosystem
• servo-tuning
• set