ball bearing
noun[C]
uk/ˌbɔːl ˈbeə.rɪŋ/us/ˌbɑːl ˈber.ɪŋ/asmallmetalballor several of thesearrangedin aringto makeparticularpartsof amachinemovemoreeasily
滚珠;滚珠轴承pagadesign/iStock / Getty Images Plus/GettyImages
Machines - parts
- air compressor
- air filter
- cogwheel
- compressor
- console
- control panel
- controller
- cowl
- differential gear
- guard
- instrumentation
- jet
- plunger
- regulator
- safety valve
- slide
- split pin
- universal joint
- vee belt
- wheel