推力

The article with the intercept outside aerosphere implement to study a target, consider amount of miss the target is very small approach rate mediumly with intercept process bigger, be aimed at engine to be able to offer constant thrust only, can be started for many times and have pulse job state, and do not have change the character of thrust job status, apply slant buy scale guides brought a law to design agree with the switch threshold value that course controls engine.

本文以大气层外拦截器为探究对象，考虑到脱靶量很小和拦截过程中的接近速度比较大，针对发动机只能提供常推力，能多次启动并具有脉冲工作状态，且不具有变推力工作状态的特性，运用偏置比例导引律设计了适合于轨控发动机的开关阈值。

Each engine is rated at 17,857 lb (79.43kN) dry and 27,557 lb st (122.58kN) with afterburning.

每具引擎具有17857磅（合79.43千牛）推力或27，557 磅推力（合122.58千牛）。

It uses additional power plant will be the executing agency of the level of air film thrust lever magnified by the conversion to vertical thrust.

它采用增力装置将气动薄膜执行机构的水平推力经杠杆的放大，转换为垂直方向的推力。

When it comes to the rise of China, you have to be a realist that when push comes to shove, their push is bigger than our shove,' says Barnaby Joyce, a conservative leader in Australia's Senate.

澳大利亚参议院保守派领袖乔伊斯说，说到中国的崛起，你必须采取现实主义的态度，他们的推力比我们的反推力要大。

Cut file, sawing skills by learning the grip, standing position, body movements, and many other points force factors and the impact of the traditional grip of the emergence of file-grip handle to stand up after slightly outside the site of the palm, when a file cut Force, after the file handle a gradual shift,"hold" to "grasp", resulting in the introduction file enough; saw grip handle full point higher than the thrust of the saw blade to install center hole of about 30mm, the high point of thrust is likely to result in the bow saw On both sides of the swing, resulting in a broken saw blade and saw seam askew.

锉削、锯削技能的学习是受握法、站立部位、身体动作、作用力点等诸多因素的制约和影响的，传统的握法出现握锉柄后顶住部位稍偏离手心，锉削时一用力，锉柄逐渐后移，"握"变成"抓"，造成锉刀推出力度不足；满握锯柄的推力点高于锯条安装孔中心约30mm，偏高的推力点很容易造成锯弓向两侧摆动，造成锯条折断及锯缝歪斜。

The existing calculation methods of landslide thrust are discussed and the finite element method for computing landslide thrust is presented.

随后本文分析了现有各种滑坡推力的计算方法，并提出用有限单元法进行滑坡推力计算的思想。

A compensation approach was proposed to counteract the effect of the cogging force by using a feedforward compensator.

采用线性插值计算方法建立齿槽推力波动的前馈补偿控制模型，并给出齿槽推力波动的标定结果，对比齿槽推力前馈补偿前后的位置跟踪误差。

This paper presented the design principles for large thrustbearing manufactured by Fuji electric, CGE, former Russia and China in detail, and conclude that low specific pressure which is less than 4MPa is available and reliable for large even huge thrust bearings. Discussion as an example was made for the potential danger of high specific pressure which excludes the application of spring group, the most secure and advanced structure of thrust bearing support unconscionably.

本文通过对富士电机、加拿大GE等西方制造厂和前苏联及国内制造厂制造的大型推力轴承的设计理念、设计原则进行了详细对比阐述，得出了低面压推力轴承在大型及至巨型推力轴承上的应用具有较高的可靠性，并进一步阐述了这种低面压轴承的可行性和必要性；得出小于4MPa的轴承面压是合理而又安全的轴承面压。

The experimental results indicated that the thrust fluctuation of the machine was unconspicuous, and no commutation was required during the stroke range.

对电机推力特性、推力密度和发电效率进行了分析及优化，并研制了一台最大推力为4 kN的样机。

The innovations of the thesis have been shown in several aspects as follows: put forward the transfer mechanism model of the landslide thrust on basis of the soil arching theory, and according to the model the formula about how to compute the thrust acting on the pile and the maximum pile spacing have been deduced. Set up the displacement model about the interaction of the pile and landslide, and their relatively displacement can be taken into consideration when computing the pile, thus the limitation of supposing the distribution of landslide thrust has been avoided, at the same time, the applied condition of the model and the computing procedure have been given. Bring forward the improved computing method of the anti-sliding pile with prestressed cable, which has been verified rational and applicable, making the method more perfectly in theory. Through the study on the mechanical model of the foundation beam with prestressed cable, put up the limit design idea of the structure, and the realization procedure of the idea has been given and programmed with the finite element, which leads to a new thinking for the safe and rational design of the foundation beam with prestressed anchor cable.

本论文的创新之处在于，用土拱理论建立了滑坡推力在抗滑桩与坡体之间的传递机制模型，并由此得到了作用于抗滑桩上的滑坡推力计算式以及最大桩间距的确定条件式；建立了抗滑桩与滑坡体相互作用的位移模型，该模型能考虑桩与坡体相互作用过程中二者相对位移的影响，避免了人为假设滑坡推力分布形式的缺陷，给出了其适用条件和计算过程；提出了预应力锚索抗滑桩的改进计算方法，使得预应力锚索抗滑桩的计算理论更加完善，通过实例验证了该方法的适用性和合理性；在预应力锚索地梁力学计算模型研究的基础上，提出了预应力锚索地梁极限状态设计的新思想，给出了该设计方法的实现途径并编制了有限元计算程序，为锚索地梁合理而安全的设计提供了一种新思路。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。