名词
中文翻译：内花键铣刀
同义词：
['internal helical cutter', 'internal helix cutter']
例句：
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1. The involute cutter was used to cut the metal sheet.
内花键铣刀被用来切割金属板材。
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2.The involute cutter was designed to fit perfectly into the machine's chuck.
内花键铣刀被设计成能完美地安装在机器的夹头上。
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3. The involute cutter is essential for precision machining.
内花键铣刀对于精密加工来说是必不可少的。