The moveable horizontal surface of the empennage used for pitch trim.

飞机尾翼的可动水平面，用来控制俯仰配平。

An article of furniture supported by one or more vertical legs and having a flat horizontal surface.

桌子：一件家具，由一根或多根竖直的桌腿来支撑，并具有一个平坦的表面。

The length of the strap shall be measured when the product is placed on a horizontal surface with no load.

带子长度的测试方法是将带子放在水平表面上，没有任何负重。

This paper describes the method of dynamic optimum design for horizontal surface grinding machine structure.

本文阐述了平面磨床结构的动态优化设计方法。

A cutout in the horizontal surface has been made for these rooms that each have a courtyard providing air and light.

水平分隔的墙面使这些房间都带有一个庭院，可以提供充足的空气和光线。