名词
中文翻译：赫利孔齿轮同义词
同义词：
['Helicopter gear', 'Helicopter transmission']
例句：
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1. The helicopter's gear was designed to be lightweight and easy to operate.
直升机的齿轮设计轻便且易于操作。
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2. The gears on the transmission were all in perfect alignment.
传动装置上的齿轮完美对齐。
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3. The gears on the helicopter were made of high-quality materials for durability.
直升机上的齿轮由优质材料制成，以增加耐用性。