The shape of ramp and the attitude control of aircraft in the ramp take off are analyzed and discussed, and these researches can lay the foundation for ground based ramp taking off technology.

对斜板形状对飞机起飞性能的影响及斜板起飞中飞机姿态的控制进行了分析讨论，为进一步研究斜板起飞技术打下了基础。

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Based on elastic methods and the layer-wise summation method, a program developed for settlement calculation of pile ground and combined composite foundation.

基于弹性理论方法，结合分层总和法，编制了群桩沉降计算程序，并掘此对普通群桩和组合桩群桩性状和沉降计算进行研究。

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This paper gives a detailed introduction to the determination of the base price of the tower and the norm making of tower erection, tower foundation and the ground - based foundation of the antenna.

此文对铁塔基价的确定及铁塔架设、铁塔基础、天线地面基础的定额编制，进行了较为详细的介绍。

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Senator Jon Kyl (R-AZ), the ranking Republican on the Senate Judiciary Subcommittee on Terrorism, Technology and Homeland Security, told a gathering at Washington's Heritage Foundation that China's destruction of an aging satellite with a ground-based ballistic missile was a "wake-up call" that should make the U.S. get serious about threats in space.

CENTERFORSECURITYPOLICY: 2007: A Chinese space odyssey

Obering went on to say that the U.S. would be investing in a "good experimental foundation" that would add to the country's existing sea and ground-based missile defenses.

CENTERFORSECURITYPOLICY: 2007: A Chinese space odyssey