worm barring gear是什么意思，worm barring gear的翻译，worm barring gear音标、读音、用法和例句

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worm barring gear是什么意思，worm barring gear的翻译，worm barring gear音标、读音、用法和例句_绍翊字体网有道词典

worm barring gear

基本解释