查询词典 gravity force

So considering trafficability of every single wheel isn\'t circumspect.If driving force of wheels are not concerted,it will happen that some wheel sinks and can\'t produce driving force since wheel sinks too deeply.

如果车轮驱动力输出不协调控制，在松软月面前进时很容易因为某一个车轮受力过大而导致下陷过深失去驱动能力，使整个月球车无法前进，所以车轮驱动力的协同控制是月球车在不平月面几何通过性的重要保证。

Based on the experiments of physical properties of desert sand,the driving force of running desert wheeled cross-country vehicle were obtained by calculating force between tire and sand.The experiments about pressuring grass resistance of lengthways lay out grass mechanism were done.According to the vehicle terramechanics theory,desert trafficability of straw-checkerboard sand barriers paving robot was analyzed.

本文在测试沙土物理特性和选择沙漠车的基础上，依据车辆地面力学理论，通过分析、实验和计算草方格铺设机器人的行驶阻力以及牵引车的牵引力，讨论防风固沙草方格铺设机器人在沙漠中的通过性。1沙土特性与牵引车参数1.1沙土的物理特性该机器人是通过轮胎与地面的相互作用力推动其前进。

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鞋产品：耐克空气jordans3、4、5、6、7、8、9、10、11、12、13、14，18、20鞋空军部队空运马克斯90、95、总氮、2006、皮鞋有限公司，投资之一、枣、adidasshoes，耐克鞋、教练员、训练鞋、篮球鞋、二 aseball，足球，足球鞋，鞋。

Basing on the exploring of the functions of cohesion force and friction force during rheology course and the assumptin that viscosity lost according viscosic strain, a constitutive model for viscous, elastic and plastic rock is set up,which can simulate the third course of creep.Then the impact of transcient damage to rheology is discussed and corresponding creep model for rock is proposed.

在探导岩石颗粒间粘聚力和颗粒间摩擦力在岩石发生流变过程中的作用基础上假设粘性失效按流变应变统计概率分布，建立了岩石粘弹塑性本构关系，能够描述岩石蠕变加速阶段特征；讨论了瞬时损伤对岩石流变的影响和相应的损伤蠕变模型建模问题。

The frictional force and wear are two basic parameters for the investigation of friction and wear properties,but the frictional force can not be measured with the OAT-U high temperature tribometer .

文章针对日本产OAT-U大越式高温摩擦磨损试验机不能测量摩擦力的不足，对其进行了改造，增加了摩擦力的在线测试功能。

The characterization of modified surfaces were explored by contact angle measuring meter and atomic force microscopy,the tribological properties of samples in nanometer and millinewton scale were measured by friction force microscopy and CETR UMT-2 tribometer. The effects of ultraviolet radiation,sliding velocity and load on tribological properties of samples were analyzed.

在铝、钛金属薄膜和铝、镁、钛及钛合金上制备自组装分子膜，使用接触角测量仪、原子力显微镜对改性的表面进行表征，使用摩擦力显微镜和微摩擦磨损试验机对试样在纳米尺度和毫牛尺度下的摩擦学特性进行测试，分析了紫外照射、滑动速度、载荷对试样的摩擦学特性的影响。

The Center of rotation located in trifurcation area.Conclusion The stress of anchorage molar and its periodentium was not a singe force but a complex force.

支抗磨牙的应力并不仅仅是一种力单独作用的结果，而且是由弯矩、扭矩、推力、压力、拉力共同作用形成的复杂应力。

In the second chapter several new concepts of elasto-plastic fuzzy stiffness and element are proposed. The fuzzy element matrixes corresponding to the elasto-plastic fuzzy element are also established. In order to use the bilinear and trilinear restoring force modles on analysis seismic responses of structures. A fuzzy mathematical method for dealing with the critical points of the restoring force curve is proposed too.

第二章针对结构在地震弹塑性分析中的刚度模糊性，提出了模糊刚度的概念，并进一步对平面和杆系的弹塑性问题提出了弹塑性模糊单元的概念，建立了相应的模糊单元刚度矩阵；为了利用现有的折线恢复力模型，并且更好地反映结构刚度的过渡性，还给出了用模糊数学处理折线恢复力模型刚度折点的方法。

The minimal energy conformations of host-guest complexes were obtained with Tripos force field. Molecular dynamics simulations were carried out to investigate chiral molecular recognition and the distribution of hydrogen bonds. The energies of recognition system were calculated with MM+ force field as well.

首次将分子力学方法引入卟啉的手性分子识别领域的研究；用Tripos力场研究了主客体配合物最低能量构象，比较了同一主体与互为对映异构体的两个氨基酸甲酯形成的配合物的能量差异；用分子动力学模拟方法研究了手性分子识别行为及体系的氢键分布；用MM+力场研究了识别体系的能量。

It would be, in effect, a smaller version (perhaps 1,500-strong) of NATO's now-defunct Allied Command Europe Mobile Force-Land, a brigade-sized force (about 5,000 soldiers) whose role was to act as a tripwire in the cold war.

实际上这将会成为现在已经不存在的北约的盟军欧洲统帅部地面机动部队——一支旅级部队（兵力大约5000人），作用是冷战中作为前线军事力量（tripwire是个军事术语，指能引发较大规模军事行动的规模相对较小的前线军事力量，译者注）——的瘦身版（兵力也许有1500人）。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。