一些气球飞行家曾提到在舰上使用系留气球的问题.Some balloonists talked of using captive ', ballons from ships.为研究系留气球稳定性,建立了系留气球的三维非线性动力学模型.To stability analysis of tethered balloon, a three dimensional nonlinear mathematical model tethere...
Family values are suddenly the name of the game...家庭价值观突然变得重要起来。She suddenly raised her arms and spun, so the dress's full skirt fanned out in a bright circle...她突然举起双臂旋转起来，连衣裙的裙身呈圆形完全展开，明艳照人。Connie suddenly struck ...