您要查找的是不是：
- positive lift force 正升力
- Near the midchord, the suction can provide a higher lift force for the airfoil. 吸气孔位置在翼面的中部附近增升效果较好;
- To lift forcefully from beneath; heaveupward. 从底下猛力地提起;向上提升。
- To lift forcefully from beneath;heave upward. 从底下猛力地提起；向上提升
- To lift forcefully from beneath; heave upward. 从底下猛力地提起；向上提升
- The canard surface, unlike a conventional tailplane which it replaces in delta wing designs, generates positive lift. 与三角翼所取代的常规布局中的尾翼不同，这种鸭翼是能产生正升力的。
- The upper stem mechanically connects to the lower stem, providing positive lift without the use of a spring. (See Figure 6. 上阀杆机械地同下阀杆连接在一起，不使用弹簧就提供了正的升力。
- The two wall jets collide with each other and turn upward to form an upwash fountain which increases the lift force of the upper plate. 包围在喷射流与喷泉流附近的流体会被其带入而在周围形成数个涡流。
- Modern aircraft are so heavy that the wings must develop a very large lift force in order to sustain the aircraft. 现代的飞机很重,机翼必须产生很大的升力才能保持在空中飞行。
- It shows that thermodynamic and heat transfer processes have significant influence on the static lift force and flight control of an airship. 分析表明，飞艇上升过程中的热力学和动态传热过程对飞艇的浮力和飞行控制有重要影响；
- The diffuser helps contain the lift force while the wing brings considerable downforce onto the rear axle to maintain aerodynamic flow and stability. 扩散器可以帮助控制升力的机翼上带来很大的压力，后轴保持空气流通和稳定。
- His position lifted him from the common crowd. 他的地位使他的身份高人一等。
- However,erroneous length of the slings is always found in practical works,causing non-ignorable effect on the lift force of the slings and the bending moment of the piles. 实际工程中各吊索间长度总是存在偏差,因此会给吊索的吊力和桩身弯矩带来不容忽视的影响。
- The bigger the effective eccentricity, the higher the upper drill string's lifting force, the higher the positive pressure on casing/ drill string, and the more serious the wear. 有效偏心距越大，上部提升力越大，套管/柱之间的正压力将越大，磨损将越产重。
- This compensates backward movement of the lift forces as shockwaves develop. 这样补偿了当激波产生时升力向后的运动。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- Fluctuating lift forces are measured for staggered tube bank under two phase cross flow by a strain gauge. 采用电阻应变仪和脉动升力测量装置;在气液两相流横向冲刷三排错列排列的管束时;对其受到的脉动升力做了试验研究.
- The calculation results demonstrate the effective eccentricity and the lifting force of the upper drill string are the major influential factors. 计算结果表明，有效偏心距和上部钻柱的提升力是影响近井口套管偏磨的主要因素。
- An upward force must be exerted on it so as to lift an object. 要提起重物必须向它施加一个向上的力。
- Some specific measure about reducing lifting force and yawing moment are advanced. 认为经典升力理论遗漏了一个决定升力的重要因素:流体的压强梯度。
