名词
中文翻译：外部供料线
同义词：
['external supply line', 'external feed pipe']
例句：
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1. The external feedline is crucial for the operation of the plant.
外部供料线对于工厂的运行至关重要。
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2. The engineer carefully inspected the external feed line before welding.
工程师在焊接前仔细检查了外部供料线。
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3. The external feed line was damaged during the construction process.
在建设过程中，外部供料线受到了损坏。