百度
谷歌
图片
维基
百科
pin connection
pin console typewriter
pin contact
pin cop
pin cord
pin coupling
pin cropping machine
pin crusher
pin curl
pin density
PIN diode
pin down
pin drafter
pin electrode
pin electronic control
pin end
pin expansion test
pin eye
pin face wrench
pin feather
pin file
pin force
pin function
pin gauge
pin gear shaper
pin gearing
pin grain
pin head
pin hinge
pin hole
pin console typewriter
pin contact
pin cop
pin cord
pin coupling
pin cropping machine
pin crusher
pin curl
pin density
PIN diode
pin down
pin drafter
pin electrode
pin electronic control
pin end
pin expansion test
pin eye
pin face wrench
pin feather
pin file
pin force
pin function
pin gauge
pin gear shaper
pin gearing
pin grain
pin head
pin hinge
pin hole
pin connection
销钉［螺栓； 引线］连接