名词
中文翻译：平衡活塞
同义词：
['weight balance', 'counterbalance', 'counterweight']
例句：
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1. The engineer designed a new balance piston to improve the efficiency of the machine.
工程师设计了一种新的平衡活塞，以提高机器的效率。
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2. The weight balance is crucial for maintaining stability in the aircraft.
重量平衡对于保持飞机的稳定性至关重要。
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3. The counterweight was added to the balance piston to reduce vibrations during operation.
为了减少操作过程中的振动，添加了一个配重到平衡活塞上。