名词
中文翻译：花键轴
同义词：
['fluted shaft', "fluted roller例句：1. The machine's fluted roller shaft is designed to reduce friction and increase efficiency.（这台机器的花键轴设计用来减少摩擦并提高效率。）"]
例句：
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1. The machine's fluted roller shaft is designed to reduce friction and increase efficiency.
这台机器的花键轴设计用来减少摩擦并提高效率。
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2.The fluted roller shaft is crucial for the smooth operation of the machine.
花键轴对于机器的平滑运行至关重要。
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3. The engineer carefully selected the right fluted roller shaft for the project.
工程师仔细选择了适合该项目的正确花键轴。