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单词 ball bearing
释义

ball bearing

​noun countable
UK
Word Forms
singularball bearing
pluralball bearings
DEFINITIONS1
  1. 1
    one of several small hard metal balls that are used between moving parts of a machine to help the parts move smoothly
    Synonyms and related words
    Parts of machines and machinery
    ancillary
    ball bearing
    bearing

ball bearing

​noun countable
US
Word Forms
singularball bearing
pluralball bearings
DEFINITIONS1
  1. 1
    one of several small hard metal balls that are used between moving parts of a machine to help the parts move smoothly
    Synonyms and related words
    Parts of machines and machinery
    ancillary
    ball bearing
    bearing
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更新时间：2026/2/20 17:50:44