查询词典 lunar flight

First, the angular velocity function and maneuver load for certain maneuver flight (including hover, dive-hike and these two combined) are set up. The simulation results of the vibration of double-disk rotor system with cantilever supported on rigid bearings show that rotor would be apparently deformed under maneuver load. Second, the performance of oil force of SFD in maneuver flight is analyzed. The results show that in maneuver flight, the SFD with centering spring will become eccentric and its oil force will be time-related and offset-related. Then, SFDs are introduced into typical Jeffcott rotor system. The whole system will be statically displaced in maneuver flight and the nonsynchronous components of oil force appear in the response of rotor system.

首先，建立了水平盘旋、俯冲拉起及盘旋+俯冲拉起复合机动三种机动飞行条件下的机动角速度函数，并确定了对应机动飞行条件下的机动附加载荷(附加离心力和附加陀螺力矩)，分析了带刚支的双盘悬臂转子系统在机动飞行条件下的振动特性，发现发动机转子在机动飞行时会发生明显变形；随后，分析了非定心挤压油膜阻尼器的油膜力特性，机动飞行时，油膜轴颈在机动附加载荷的作用下偏离外环中心，使得带定心弹支的挤压油膜阻尼器也变成了非定心挤压油膜阻尼器，其非定心挤压油膜力是瞬态时变的，并且与SFD油膜轴颈偏移量和进动形态有关；然后，在经典的Jeffcott转子系统中引入带定心弹支的挤压油膜阻尼器，分析了机动飞行时非线性转子系统的振动特性，发现挤压油膜阻尼器油膜力的非协调特性也反映到转子系统的振动响应中；之后，对机动飞行条件下带挤压油膜阻尼器的双盘悬臂转子系统的振动特性进行了分析，并重点分析、总结了俯冲拉起机动飞行时，系统结构参数和工作状态参数(转速比、机动飞行半径、机动角速度等)对该系统振动特性的影响。

Space chronobiology is a main subject to affect the long term space flight, manned lunar flight and planetary exploration in the future.

空间时间生物学是未来制约长期载人航天乃至月球和星际飞行的重要研究领域之一。

Although scientists had postulated this phase of lunar history based on the Apollo samples, the proof came from the Clementine and Lunar Prospector data, which indicated the global distribution and large abundance of anorthosite.

虽然科学家根据阿波罗太空船所采集的样本提出了关于月球这段历史的假说，但是证据却来自克莱门蒂号和月球探勘者号的观测，显示斜长岩丰富且分布全球。

Driving force of wheel on soft lunar soil is much different with wheel on the ground of the earth.Wheel sinks and slides easily on lunar soil.The driving force formula of wheel based on Bekker formula is much complex,for forecasting driving force,curve fitting based on least squares method was introduced to simplify formula driving force.The driving force can be calculated through measuring wheel sinkage and slide.

基于Bekker轮-地力学理论的车轮驱动力计算公式复杂，不适合直接计算，为实现车轮驱动力预测，为车轮驱动力优化提供计算基础，本文采用基于最小二乘法的数据拟合方法对车轮驱动力进行数值拟合计算，为实时的车轮驱动力预测提供可行的方法，从而实现对车轮驱动力的优化。

Above all oneself should have popularity, can become one with with the colleague; the first pace makes acoustical call to the often buys bit of check again fellow with concern nicer with oneself first, there is bit of card to sell here, tell them to the dot blocks what price (the result that before this can be used, investigates, what colleague often gets stuck with what, tell him; compares the petty gain outside commonly straight from the shoulder some the) that they can buy, say to be clear about to there is what advantage here with them, for instance; can give card first close, the word that; economy actual strength pays to allow after is OK also lunar form, the time that if the metropolis that likes to play game more very much buys card suddenly when just sending salary to fill; to implement month of form, decides settle accounts date to the 2-3 day after sending salary (little hint: Lunar form is not frivolous do, want those who have a choice to do, often buy check with what won't the colleague of bilk does)!

首先自己要有人缘、能跟同事打成一片；第一步先向跟自己关系较好的又经常买点卡的同事打声招呼，自己这里有点卡出售，告诉他们什么点卡什么价格(这就可以用到之前调查的结果了，哪些同事经常用哪些卡，直截了当的告诉他；一般比外面的便宜些他们都会购买的)，跟他们说清楚自己这里都有哪些优势，比如；可以先给卡密，后付钱；经济实力答应的话也可以月结，很多喜欢玩游戏的都会在刚刚发了工资的时候猛买卡充；实行月结的话就把结算日期定到发了工资后的2-3天的时间(小提示：月结不要随随便便的都做，要有选择的去做，跟哪些经常买卡又不会赖帐的同事做)！

In the initial design period of lunar exploration device, an accurate finite element modeling of lunar regolith is significant for the simulation and analysis.

在月球探测设备设计初期阶段，建立较为精确的月壤有限元模型，对于仿真和分析探测工具与月壤的相互作用情况至关重要。

For more information, visit the Diviner's web site at http://diviner.ucla.edu and the Lunar Reconnaissance Orbiter web site: http://lunar.gsfc.nasa.gov/.

目前，这一最新月球温度观测研究为美国宇航局当前其他月球勘测任务带来了希望，科学家们期望能够在月球表面发现水资源的存在。

The design requirement and mechanism of Lunar Rover with Center of Mass Varied (CMR-1) are briefly introduced. Based on the characteristics of wheelsoil interaction mechanics, the wheel sinkage, stability margin, motion resistance and drawbar pull of lunar rover in forward mothion are analyzed using terramechanics theory.

简要介绍了变质心月球车(CMR1)的设计要求和机械结构，并基于地面力学的知识，从分析月球车轮地接触力学特性入手，对变质心月球车行走过程中车轮下陷量、运动阻力和牵引力等进行了分析。

Utilizing the terra-mechanics equation and parameters of the lunar topsoil (the following is abbreviated as lunar-soil), the drawbar clevis pulling force of wheel was predicted by calculation.

应用地面力学方程和月球表层土壤参数计算预测了车轮的挂钩牵引力。

Found in a pile of old Apollo lunar surface photographs, the picture reveals an object at the far left of the frame that appears to be a drinking fountain, surprisingly close to one of the Lunar Module landing struts.

在旧阿波罗月球表面的照片发现桩，图片显示在远框架，似乎是一个饮水机，竟然接近登月舱着陆支柱之一留下了对象。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？