ball bear·ing
noun/ˌbɔːl ˈbeərɪŋ/
/ˌbɔːl ˈberɪŋ/
- a ring of small metal balls used in a machine to enable the parts to turn smoothly; one of these small metal balls

enlarge image Topics Engineeringc2球轴承;滚珠轴承;滚珠
| 单词 | ball-bearing |
| 释义 | ball bear·ingnoun/ˌbɔːl ˈbeərɪŋ/ /ˌbɔːl ˈberɪŋ/
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