英语词汇“safety pinion”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	safety pinion
释义	safety pinion noun : a center pinion gear of a watch that unscrews when the mainspring breaks and relieves the pressure on the delicate train wheel teeth and arbor pivots
随便看	autonomously autonomy autonymous auto-oxidation auto-oxidize autopathy autopelagic autophagic autophagous autophagy autophobia autophone autophonic autophyte autophytic autophytically autophytograph autophytography autopilot autopistol autoplastic autoplastic autoplastically autoplastic graft autoplasticity

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