名词
中文翻译：维护机械
同义词：
['maintaining machinery', 'maintenance equipment']
例句：
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1. The machine is in need of regular maintenance to keep it running smoothly.
这台机器需要定期维护，以保持其平稳运行。
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2. Maintenance machinery is essential for maintaining the efficiency of any machinery system.
维护机械是任何机械系统保持效率所必需的。
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3. The engineers are responsible for maintaining the machinery during the construction process.
工程师们负责在施工过程中维护机械设备。