“vacuum engine”的概念、定义、翻译、参考文献-科学参考

单词	vacuum engine
释义	vacuum engine 真空发动机
随便看	separating guide separating hyperplane separating infected seed separating keyword separating knife separating layer separating line separating lug separating machine separating material separating mechanism separating medium separating medium density separating needle separating of grease separating plate separating powder separating power separating prism separating property separating rate separating resonance separating sample separating saw separating screen

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