单词	云幕气球
释义	云幕气球ceiling balloon
随便看	hyperbolic projectivity hyperbolic quadratic surface hyperbolic radio navigation hyperbolic re-entry hyperbolic residual speed hyperbolic riemann surface hyperbolic search hyperbolic secant hyperbolic secant distribution hyperbolic sector hyperbolic sine hyperbolic singularity hyperbolic space hyperbolic speed hyperbolic--speed hyperbolic spiral hyperbolic structure hyperbolic sweep generator hyperbolic system hyperbolic tangent hyperbolic toral automorphism hyperbolic trajectory hyperbolic transformation hyperbolic travel time hyperbolic type