英语词汇“θ214509”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	θ214509
释义	society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > parts for reducing friction > part of (2) friction-roller1793 (a) a roller placed so as to lessen the friction of anything passing over it; (b) see quot. 1888. ball bearing1904 A small, solid metal ball of the kind used in such bearings.
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