This pushing and pulling force is called lift.
这种推和拉的力量就叫做升力。
Demand is the original pulling force of economic growth.
需求是经济增长的原始拉动力。
Tension is a mutual pulling force. It can be divided into internal tension and external tension.
张力是一种相互牵引力，它可以分为内部张力和外部张力。
The gap is influenced by water pressure gravity of equipment; magnetic pulling force and heat expand.
间隙的大小受水压，设备自重，磁拉力和热膨胀等影响，其中以热膨胀的影响因素最大。
Extension springs are springs which absorb and store energy by offering resistance to a pulling force.
拉伸弹簧通过抵抗张力吸收和存储能量。
The maximum working pulling force of bolt-set connection under a bending moment is measured and analyzed.
对受翻转力矩螺栓组联接的最大工作拉力进行测试与分析，提出符合实际受力状态的精确计算方法。
When tensile force value dispersed degree of steel wire is low, broken pulling force of wire rope is high.
当钢丝拉力值的离散度较小时，钢丝绳的整绳破断拉力值大。
Design and calculation method of the key parameter such as the diameter of roller and pulling force are given.
介绍两辊式和三辊式机械弯曲除锈原理，给出关键参数如辊子直径、牵引力等的设计计算方法。
The handy intelligent pulling force instrument was designed for measuring pulling forces of agricultural machinery.
便携式智能拉力仪是为测量农业机械牵引力而设计的。
Based on above results, an estimating method of pulling force of anchor cable decreased with time is finally proposed.
在此基础上，提出了锚索张拉吨位随时间而损失的估算方法。
For laying indoors, in trenches, in ducts and down well , able tobear heavier pulling force, andfor fixed installation.
敷设在室内、电缆沟、管道、竖井等能承受较大机械拉力等固定场合。
Flow into the cylinder can be directed to either end, producing either a pushing or pulling force at the piston rod end.
可以控制油液流如液压缸的其中一端，在活塞杆上产生一个拉力或产生一个推力。
Such as the calculation of the roller spring pressure, the pulling force of the chain, the consumption of the power etc.
如碾压辊弹簧压力的确定，驱动链拉力的计算，功率的消耗计算等。
The combination of the spinning wire and constant pulling force cuts a path through the concrete and steel reinforcement.
结合纺纱线和不断削减一条拉力钢筋混凝土和通过。
Three hollow pulling force nails make little wound and large joined controlling area. They are the ideal inner fixed objects.
三根空心拉力钉固定创伤小而连接控制面积大是理想的内固定物。
The pressure safety devices can help to retain the draw bar pulling force in the event of a breakdown of the hydraulic system.
安全阀可以防止因液压系统故障等原因而引起的油缸输出推（拉）力急骤下降，可确保加工安全。
When if the habit is admired, sleeping, can curve knee or the pillow is placed below knee, with pulling force of slow down sarcous.
如果习惯仰睡时，可将膝盖弯曲或在膝盖下放置枕头，以减缓肌肉的拉力。
The regularity of the influence of chip - pulling force and chip - pulling Angle on machining force is researched during this process.
在此过程中，研究了拉屑力和拉屑角对切削力的影响规律。
For laying indoor, in tunnel, cable French, well or direct in ground, able to bear external mechanical forces and certain pulling force.
室内、隧道、电缆沟内或直脉地下，能够承受一定的机械外力和一定的拉力。
Lath lath should fitness of first selection appliance, be like dumbbell, barbell, pulling force implement, assorted fitness implement etc.
瘦人应首选器械健身，如哑铃、杠铃、拉力器、组合健身器等。
Gyroplane is different from the helicopter. Its rotors are not linked to the engine and cannot provide pulling force and controlling moment.
旋翼机与直升机不同，它的旋翼和发动机没有联系，不能提供拉力和操纵力矩。
A guide way of the pulling force pliers and the surface of the bottom seat are provided with the graduations for displaying the line elongation.
拉力钳的导轨和底座表面上均有刻度，以显示线伸长率。
And narrating the size depends on the degree of the pulling force, a reasonable size should provide a sufficient work room for the anchor system.
得出了锚碇尺寸主要取决于主缆拉力的大小，合理的锚碇结构要能给预应力锚固系统提供足够的工作空间。
This article has discussed that the hardware structure and the software development of computer control system of the pulling force test machine.
本文讨论了拉力试验机计算机控制系统的硬件组成及其软件的开发。
It is the result of both the pulling force from positive factors in society environment and the thrust from negative factors in the organization.
文章认为，雇员离职是社会环境积极因素形成的拉力和组织中的消极因素形成的推力，共同作用于雇员的结果。
For laying in doors, in tunnels, in cable trench or direct in ground, able to bear external mechanical forces, but unable to bear large pulling force.
室内、隧道、电缆沟内或埋地等能承受机械外力的场所，但不能承受大的拉力。
This paper reviews the formation and mathematical model of puling force, the relationship between pulling force and pultrusion speed and its measurement.
本文评述了牵引力的构成、计算牵引力的数学模型及牵引力与拉挤速度的关系及其测量。
Based on turning with inclined large cutting edge, a certain pulling force is exerted on chips in the flow chip plane to perform chip - pulling machining.
本文以大刃倾角斜角车削为基础，在流屑平面内对切屑施加一定的拉力，进行拉屑切削。
In the condition of no sufficiency of the deflection of two-end fulcrum and elasticity of bearing cable, the calculation of pulling force to any load is done.
本文在充分考虑林业集运材多跨索道承载索两端支点的可挠性及承载索弹性的不完整性的情况下。研究了任意载荷时的拉力的计算。
On the basis of our analysis of some physical textbooks, and from the view of transformation of energy, this paper gives an essential idea on the pulling force.
本文在分析目前国内外物理教科书中关于牵引力的提法之后，从能量转换的角度，提出了关于牵引力本质的一种看法。
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