双曲面是指双曲线绕其对称轴旋转而生成的曲面。双曲面是一种二次曲面，分为单叶双曲面、双叶双曲面和旋转双曲面。现实中许多发电厂的冷却塔结构就是双曲面。
n. hyperboloid
misc. double curved surface
... hyperbolical feflector 双曲面形反射气 hyperbolical surface 双曲面 hyperbolical grill 双曲线栅格 ...
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... Dirt Resistance：防尘自洁性 Double Curvature：双曲面 Double Layer/Skin：双层 ...
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... geometry curvature surface 几何曲面 double curvature surface 双曲面 curvature surface measurement 曲面测量 ...
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双曲面模型 hyperboloid model
准双曲面齿轮 [机] hypoid gear ; Hypoid gears ; bevel and hypoid gear ; hyperboloid gear transmission
单叶双曲面 hyperboloid of one sheet ; unparted hyperboloid
准双曲面齿轮偏置距 Hypoid offset
双叶双曲面 hyperboloid of two sheets ; parted hyperboloid ; biparted hyperboloid elliptic
共焦双曲面 [数] confocal hyperboloid ; confocal aggressiveboloid
准双曲面齿轮副 [机] hypoid gear pair
双曲面的 hyperboloidal ; bi-curved
回转双曲面 [数] hyperboloid of revolution
The experimental result of the paraboloid and hyperboloid with different shapes are presented,the fitting accuracy arrived to 10nm rms. Thus the deviation of the off-axis aspheric section can be controlled effectively.
通过对抛物面和双曲面两种形式不同外形的镜面数据的计算,拟合的RMS值可以达到10nm的精度,从而表明该测量计算方法可以有效地控制离轴面加工时的参数误差。
参考来源 - 离轴二次曲面面型参数测量归算方法的研究This paper researches a new predominant variable torque clutch-hyperboloid clutch with rollers whose core component is the hyperboloid bearing.
本文以双曲面滚柱轴承为核心元件,设计制造了一种性能优越的新型可变扭矩加载器。
参考来源 - 着陆梯与加载器相关技术的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
主体建筑量覆盖一个投双曲面屋顶，屋顶是传统陶瓷砖包。
The main building volume is covered by a pitched double-curved roof which is clad with conventional ceramic roof tiles.
屋顶双曲面由纺织膜形成，纺织膜以均匀曲面包覆整个建筑。
The double curve of the roof is formed by a textile membrane enveloping the whole building in one homogeneous sweep.
准双曲面齿轮齿面主动设计技术为准双曲面齿轮副的设计提供了一种全新的思路。
The active design technique of hypoid gear tooth face provides a kind of fresh method of the hypoid gear design.
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