探照灯的反射镜和卫星电视天线常做成旋转抛物面的形状;c^2=-1 (5)椭圆抛物面(Elliptic paraboloid) x^2/,后者又称马鞍面),压扁了就得到一般的形状;a^2-y^2/。
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... 椭圆柱 elliptic cylinder 椭性抛物面 elliptic paraboloid 椭性双曲面 elliptical hyperboloid ...
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elliptic paraboloid of revolution 回转的椭圆抛物面
elliptic paraboloid shell [建] 椭圆抛物面壳体
mining fissure Elliptic Paraboloid Zone 采动裂隙椭抛带
An elliptic paraboloid is proposed as the failure surface for concrete under multiaxial Stresses.
本文用椭圆抛物面作为混凝土三向应力时的强度破坏面。
Identifying the basic properties of mining fissure elliptic paraboloid zone and gas delivery law governing goaf represents an effective measure to control gas.
研究采动裂隙椭抛带的基本性质及其采空区瓦斯运移的规律,可以采取有效措施进行瓦斯治理。
After raining, a dynamic Elliptic Paraboloid Zone distribution would be formed if the bed-separated fissures and broken fissures of the overlying stratum were connected.
综放开采后,上覆岩层中的离层裂隙和破断裂隙相互贯通后会形成一个动态变化的椭抛带分布。
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