名词
中文翻译：内部齿形
同义词：
['internal gearing', 'internal gearing arrangement']
例句：
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1. The company's newproduct line is designed to improve internal toothing efficiency.
该公司的新产品线旨在提高内部齿形效率。
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2. The engineer analyzed the internal toothing of the machine to identify any potentialissues.
工程师分析了机器的内部齿形，以识别任何潜在问题。
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3. The newdesign optimizes internal toothing for better performance and durability.
新设计优化了内部齿形，以获得更好的性能和耐用性。