英语词汇“roller jewel”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	roller jewel
释义	roller jewel noun : a usually ruby or sapphire pin set upright in the roller disk and pushed by the pallet fork — called also impulse pin
随便看	ethnopsychology ethnos ethnoscience ethnoscientific ethnoscientist ethnozoological ethnozoology etho- etho ethogram ethohexadiol ethological ethologically ethology ethos ethosuximide ethoxide ethoxide ethoxy ethoxy ethoxy- ethoxycarbonyl ethoxyl ethoxyline ethoxyline resin

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