In the case of a plane, it's the difference in pressure on the top and bottom of its wings that keeps the craft afloat.
以飞机为例，它双翼上方与下方的压力各不相同，正是这不同的压力使得飞行器保持悬浮。
At a cruising altitude of 30,000 feet, pressure outside of the plane is about two and a half times lower than what passengers experience on the inside.
在三万英尺的巡航高度，飞机外部的气压大约比乘客感受的内部气压低2.5倍。
At a cruising altitude of 30, 000 feet, pressure outside of the plane is about two and a half times lower than what passengers experience on the inside.
在三万英尺的巡航高度，飞机外部的气压大约比乘客感受的内部气压低2.5倍。
A plane flies because air flowing more slowly under its wing exerts more pressure than the faster-moving air flowing above.
飞机之所以能飞翔是因为机翼下方的气流缓慢，对机翼上方的快速流动的空气施加更多的压力。
The recorders have info about the plane speed, its engines, its cabin pressure and what the crew was saying.
黑匣子中记录这飞机的飞行速度，发动机工作状况，舱内气压和机内工作人员的谈话记录。
The generalized aerodynamic force required in analysis is calculated by using horse shoe vortex— vibrational pressure doublet grid method, based on theory of subsonic unsteady lifting plane.
在颤振特性分析中所需要的广义气动力是根据亚音速非定常升力面理论，采用马蹄涡—振荡压力偶极子格网法计算的。
Using the related analysis method, this article deals with the point-surface conversion of the side fluctuating pressure which ACTS on plane, cylinder and sphere in hydraulic buildings in detail.
利用相关分析方法，详细讨论了作用于水工建筑物的平面、柱面和球面上的边壁脉动压力的点面转换关系，推导出面脉动荷载的解析表达式。
The text show the method to transact soft base under subgrade by mudjack, plane furnish, hole site, confirm pressure, deep of bore and technics flow of mudjack.
简要说明压浆法处治路基下软弱地基的方法，平面布置、孔径，确定压力、钻孔深度，以及压浆工艺流程。
The strength analysis of a drop-shaped tube is resolved into the following problem: axial compression together with a plane state of strain with uniform internal pressure.
把滴形管的强度分析问题分解为：沿管轴线方向的压力问题与管沿周线方向均布压力的平面应变问题的叠加。
A formula of active earth pressure on retaining wall was proposed which considers the cohesion force on sliding plane and the adhesive force on interface of soil and retaining wall.
考虑滑裂面上填土的粘聚力及填土与墙背接触面上的粘着力，推得了粘性填土挡墙上的主动土压力计算公式。
By using field observation and numerical simulation method, the influence of fracture structure plane on the underground pressure and the roof stability of working face are systematically studied.
通过对现场观测和数值模拟分析，系统研究了断裂结构面对回采工作面矿压分布和顶板稳定性的影响。
The result of test of plane stability is analyzed as well when the expansion joint bellows are subjected to internal pressure and internal pressure together with compression deformation.
文中同时分析了压力及内压与压缩位移一齐作用时的平面稳定性试验结果。
The results show that the frictions caused by the wall of shear box will influence the distributions of stresses in specimens and the normal pressure stresses on the shear plane.
结果表明，剪力盒壁摩擦力将会影响试验土样中的应力分布和剪切面上的正压应力值。
The reflected pressure of the fluid is similar between the plane acoustic wave and the point source acoustic wave.
因此，这两种不同入射声波的声波反射压力的变化既有不同，又有着相似之处。
The general solution for potential flow past irregularities im a pressure conduit can be obtained in auxiliary plane by use of analytic functional theory.
有压管道中凸体绕流的势流一般解可采用解析函数在辅助平面上获得。
Imported pneumatic components, linear motion axis unit, to ensure uniform pressure force force plane in the box.
采用进口气动元件，光轴直线运动单元，保证压合力在盒面均匀受力。
The relieving platform limits the sliding plane, and the sliding mass at this time is no longer a voussoir, so, Rankine theory and Coulomb theory cant be applied to calculate the earth pressure.
减压平台限制了墙后滑动面，此时滑动土体不再是一个楔体，无法采用朗肯理论、库仑理论计算土压力。
Large size parts generally refer to those parts with more than one meter long in each dimension, such as low-pressure cylinder of steam turbine, wing panel of plane and so on.
大型零件通常是指那些在各个维度的尺寸超过一米的零件，比如蒸汽轮机的低压缸体，飞机的机翼壁板以及一些专用零件。
We observed the anesthesia plane and effect of the patients in two groups, monitored heart rate, blood pressure, electrocardiogram, saturation of blood oxygen etc.
观察两组患者的麻醉平面和麻醉效果并连续监测心率、血压、心电图、血氧饱和度等。
Wind pressure distributions on spherical shell or curving roofs can be obtained by the method of coordinate transform or projected plane of curved surface.
并且通过坐标变换或投影平面代替曲面等方法可以处理球壳及曲面屋盖的风压分布插值计算。
A cut-off plane valve applicable for the hydraulic shield in the coal mine is introduced, which has the feature of high pressure, large flux and small handling moment.
介绍了一种适应于煤矿井下液压支架使用的高压、大流量、操作力矩小的先导式平面截止阀，并详细介绍了其工作原理、结构和使用性能特点。
Our ears pop because of the change in air pressure as the plane ascends or descends.
我们的耳朵之所以会有这种感觉是因为在飞机起飞或降落的时候发生的气压变化。
Based on the first-order shear deformation plate theory, axisymmetric governing buckling equations are derived for a functionally graded material circular plate subjected to in-plane pressure.
基于一阶剪切变形板理论，推导了功能梯度材料圆形板在边界面内均布压力作用下的轴对称屈曲方程。
The distributions and changes of the contact pressure, flow stress and velocity field on the welding plane were analyzed.
分析了不同分流模模桥结构下焊合面上接触压力、流变应力和速度场的分布及其变化。
The worm and worm among plane within the modulus and pressure Angle, namely the worm gear were equivalent modulus is equal to the end of the worm shaft side modulus and for standard;
中间平面内蜗杆与蜗轮的模数和压力角分别相等，即蜗轮的端面模数等于蜗杆的轴面模数且为标准值；
The worm and worm among plane within the modulus and pressure Angle, namely the worm gear were equivalent modulus is equal to the end of the worm shaft side modulus and for standard;
中间平面内蜗杆与蜗轮的模数和压力角分别相等，即蜗轮的端面模数等于蜗杆的轴面模数且为标准值；
应用推荐