名词短语
中文翻译：通过螺丝固定连接
同义词：
['screw connection', 'fastening']
例句：
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1.The seal was made by a screwed union of metal plates.
这个密封是通过金属板的一个螺丝连接而成的。
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2. The bolt was secured with a screwed union to the frame.
螺栓用一个螺丝连接固定在框架上。
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3.The joint was sealed by a screwed union to prevent leakage.
这个接头通过一个螺丝连接来防止泄漏。