名词
中文翻译：环形模数
同义词：
['circumference modulus', 'circumferential modulus']
例句：
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1. The ring modulus of the gear is calculated using the formula for the sum of the radii of the concentric circles.
齿轮的环形模数通过计算同心圆半径之和的公式来计算。
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2. In engineering, the ring modulus is used to determine the effective diameter of a circular section.
在工程中，环形模数用于确定圆形截面的有效直径。
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3. The ring modulus of the gear is an important parameter in calculating its efficiency and wear.
齿轮的环形模数是计算其效率和磨损的重要参数。