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

单词	rockshaft
释义	rockshaft (ˈrɒkˌʃɑːft) noun a shaft that rotates backwards and forwards rather than continuously, esp one used in the valve gear of a steam engine
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