Bed gravity is an irresistible force that draws you back to bed, or toward any mattress, couch, or other soft horizontal surface.
“床重力”是一股让你难以抵抗的力量，能将你拉回床、床垫、沙发或者其他一切软的可以平躺的物件上。
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。
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。
Due to local terrain factors such as slope, aspect and terrain inter-shielding, the insolation duration over rugged terrain is different from over horizontal surface.
由于坡度、坡向和地形之间相互遮蔽等局地地形因子的影响，实际起伏地形下的日照时间与水平面上的日照时间有一定差异。
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。
A horizontal surface raised above the level of the adjacent area, as a stage for public speaking or a landing alongside railroad tracks.
论坛，月台：高于邻近区域高度的水平的表面，如作为公众演讲的舞台和沿铁路线的平台。
The formulae for calculating the uphill steering torque resistance, haulage force and power are presented and the results are checked by the measured power on horizontal surface.
提出了在上山坡道上的转向阻力矩、牵引力和功率的计算公式，并以水平地面的实测功率进行了验证。
The formulae for calculating the uphill steering torque resistance, haulage force and power are presented and the results are checked by the measured power on horizontal surface.
提出了在上山坡道上的转向阻力矩、牵引力和功率的计算公式，并以水平地面的实测功率进行了验证。
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