The Pentagon has repeatedly said that the space plane is simply a “test bed” for other technologies.

五角大楼曾多次表示，空天飞机仅是一个技术“试验床”。

youdao

An application example is enumerated that the space plane parameters are confirmed based on invariance of cross radio.

列举一个应用实例，利用交比的不变性确定空间平面参数。

youdao

We are usually tired already by the time we get on a plane, and the crowded space and unstable internet connection make work more challenging.

当我们上飞机的时候，通常已经很累了，而拥挤的空间和不稳定的网络使工作更具挑战性。

youdao

And so begins the first powered flight of the experimental plane designed to take man to the edge of space.

VOA: special.2010.07.07

There were new designs for the plane's rocket engine, landing equipment and the small rockets needed to move it in space.

VOA: special.2010.07.07

The Smithsonian's National Air and Space Museum in Washington,D.C.owns the plane.

VOA: special.2009.03.18

The programs in question are the Clementine II asteroid intercept experiment, the Army's Kinetic Kill Anti-Satellite Weapon and the Military Space Plane.

CENTERFORSECURITYPOLICY: Clinton Policies Would Disarm U.S. Space Capabilit

The agency has already spent billions of dollars on the National Aerospace Plane, the X-33, X-34, X-37, X-38 and the Orbital Space Plane.

FORBES: Magazine Article

While the Military Space Plane was terminated on other grounds, its inherent capabilities would almost certainly fall afoul of such policies as well.

CENTERFORSECURITYPOLICY: United States Senate