名词
中文翻译：外部锥形
同义词：
['external constriction', 'external taper']
例句：
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1.The design of the new car has a very external taper.
这款新车的设计非常具有外部锥度。
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2. The external taper of the pipe is crucial for its functionality.
管道的外部锥度对其功能至关重要。
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3.The external taper of the screw head can affect the strength of the bolt.
螺丝头的外部锥度会影响螺栓的强度。