鸭式飞机的水平安定面和升降舵从一架飞行器伸出的一个短的翼状控制平面，如航天飞船的机身，被安在飞机翼前方，作为水平稳定器。
A short, winglike control surface projecting from the fuselage of an aircraft, such as a space shuttle, mounted forward of the main wing and serving as a horizontal stabilizer.
构造了存在相间滑移和换热的平面水平含沙射流的封闭控制微分方程组；
The governing equations for a planar horizontal sand jet with interphase slip and heat transfer are constructed, and solved with the aid of the modified and extendcd general program.
通过分别移动基底、地表水平面和位于基坑高度一半处的水平面上的三个几何控制点，寻找到边坡最危险滑移面并计算出对应的稳定性安全系数。
The slip surface is searched through moving the three geometric control points on the ground surface, the bottom of excavation and the surface at half of the height of the excavation, respectively.
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