ball bearing
noun /ˌbɔːl ˈbeərɪŋ/
/ˌbɔːl ˈberɪŋ/
- enlarge imagea ring of small metal balls used in a machine to enable the parts to turn smoothly; one of these small metal balls
球轴承;滚珠轴承;滚珠 Topics Engineeringc2
词汇 | ball bearing |
释义 | ball bearingnoun /ˌbɔːl ˈbeərɪŋ/ /ˌbɔːl ˈberɪŋ/
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