名词
中文翻译：Unknown
同义词：
['expander', 'expander machine', 'expansion device']
例句：
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1.The expanding machine is used to increase thesize of a material.
膨胀机用于增加材料的尺寸。
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2. The expanding machine was designed tomake large objects.
膨胀机被设计用来制造大型物体。
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3. The expanding machine is anessential tool for metalworking.
膨胀机是金属加工中必不可少的工具。