In addition , the t-50 can fire the missiles hidden in internal departments at hypersonic speed .

此外，t-50战机可以在高超音速状态下启动发射存于弹仓内的导弹。

That engine would carry the hypersonic craft to an altitude where air density and resistance are less .

引擎将高超音速飞机带向空气密度、阻力比较稀少的高度。

Us military scientists lost contact with an unmanned hypersonic experimental aircraft on its second test flight , officials said .

美官方称，第二次试飞时，军方科研人员与高超音速无人试验机失去了联系。

A hypersonic plane could potentially enable the us military to hit targets anywhere in the world in under an hour .

高超音速飞机或可助美军在一小时内对世界上任何地区的目标实施打击。

Launched from a standard runway , a hypersonic aircraft could fly faster than mach 5 to strike anywhere in the world within two hours .

从标准跑道起飞，高超音速飞机能以5倍音速在两小时内出击在全球任何地点。