【机械工程】弹簧圈（弹簧垫圈），螺钉锁紧装置（螺钉锁紧）

spring clip (snap-on clip)

spring-operated, throwing arm clay pigeon trap

spring for actuation of a spring (key) with rings

spring-loaded accumulator

spring mounting spring mounting of planing surfaces

spring clip for fastening on garment

black japanned screen door spring hinge

springstick measurement of pain