查询词典 orbit

The principle and the mathematical model of reduced-dynamic precise orbit determination are discussed based on precise point positioning technique by zero-differenced dual-frequency P codes and epoch-wise differenced carrier phase data. Then the key issue in the reduced-dynamic POD, i. e. the pseudo stochastic pulses and their impact on orbit determination accuracy are analyzed.

论述了基于低轨卫星星载GPS双频观测值的精密单点定位技术的简化动力学定轨方法的数学模型，分析了简化动力学定轨中的关键问题―伪随机脉冲的设置问题及其对定轨精度的影响。

The highest occupied molecular orbit and the lowest unoccupied molecular orbit are calculated, and the energy gap of the two orbits determines the activity of the reagents, and yet, in an alkaline solutions for flotation, the HOMOs of the corresponding ions decide the rigidity of the reagents and therefore determine the reaction activity with different rigidity metal cations in minerals, which vary flotation performance to different minerals, and the experimental results were verified.

药剂与矿物作用的能量计算结果表明：苯氧乙酸类抑制剂与方解石和一水硬铝石作用后的能量变化均为负值，能量变化有利，可以形成稳定的吸附；而与黄铁矿作用后的能量变化为正，能量的变化是不利的，故不能形成稳定的吸附，表现出较弱的抑制作用。

Huang Qu senior official yellow Jinlong and the incumbent black area senior official black must win, for the first echelon, will lead 2,000,000 starships, will go to nearby the solar system pluto orbit, will fight to the death with the planetoid; White area senior official white Peter with jumbles together, for the second echelon, leads 2,000,000 starships in Mars orbit area, completes the strategic reserves, and maintains and the first echelon of attack's inter-planetary communication traffic line; The surplus all starship, for the third echelon, will use in the Earth final defense, by alliance president the entire unification plenary powers direction, alliance president the entire unification will keep North Pole Headquarters, will be responsible for the entire campaign the coordinated duty, as well as will be responsible to manage Earth in all thunderbolts.

黄区长官黄金龙和新任黑区长官黑必胜，为第一梯队，将率领200万架星际飞行器，前往太阳系冥王星轨道附近，与小行星决一死战；白区长官白彼得与混为一谈，为第二梯队，率领200万架星际飞行器在火星轨道区，做好战略预备队，并维持与第一攻击梯队的星际交通运输线；剩余的所有星际飞行器，为第三梯队，将用于地球最后的防卫，由联盟主席全统一全权指挥，联盟主席全统一将留在北极总部，负责整个战役的协调任务，以及负责管理地球在此期间内一切突发事件。

The on orbit detected results of attitude, orbit, visible light and infrared scanning radiometer, space particle composition monitor, transmission channel, on board memory and other characteristic of the satellite are presented and analyzed.

对中国这样一个农业大国来说，目前气象卫星数据在气象、水文、农业以及灾情监测等领域的作用正在日益增强。

The bridge type derrick big car will appear to chew track phenomenon in the movement, slight of chew a track will result in a good luck and orbit of the on the side have obvious of wear away trace, severity chew a track will result in a good luck and orbit of the on the side metals be peeling off or the round's good luck outwardly transform and even jump the track to result in graveness Human body dead and injured and equipments trouble.

桥式起重机大车在运行中会出现啃轨现象，轻微的啃轨会造成轮缘及轨道的侧面有明显的磨损痕迹，严重啃轨会造成轮缘和轨道的侧面金属剥落或轮缘向外变形，甚至脱轨造成重大人身伤亡和设备事故。

The influence of the eccentricity mass moment, position of mass center and the bearing stiffness to the vibration characteristics of the rotor system is discussed in detail; 3. To verify the exactness of FEM and learn the principle of vibration of dredge pump further, The orbit of the rotor shaft of the pump in the dredger is measured, the measurement results show: the repeat of the orbit of the rotor shaft is very bad when dredge pump is in the dredging mud condition.

模态分析确定了泥泵的振动特性；谐响应分析确定了泥泵转子轴在偏心力的作用下轴截面处的最大响应位移；研究了转子轴的质心位置、轴承刚度和质量偏心矩对转子轴振动特性的影响； 3、采用轴心轨迹法，实船测量了泥泵轴工作时振动响应值。

Using the analytic results above, in chapter 4, a special data relay constellation is designed for space station, which include mainly the selection of orbit altitude, eccentricity, inclination, longitude of ascending node, the number of orbit and distribution of satellite.

探讨了卫星相对于天基的运动特性，并利用地基运动特性的结果，得到了卫星相对于空间站在过顶时间限制条件下的升交点取值范围。

The determination method of descending/ascending node, longitude of ascending node and frozen orbit parameters for sun-synchronous orbit satellite design was analyzed on the basis of six general orbital elements.

在轨道六要素的基础上，分析了卫星太阳同步轨道设计时降交点地方时、升交点赤经，以及冻结轨道参数等的确定方法。

The determination method of descending/ascending node, longitude of ascending node and frozen orbit parameters for sun-synchronous orbit satellite design was analyzed on the basis of six general orbital elements.

引言卫星的轨道设计一般可分为地面覆盖、轨道复现、卫星组网、星下点照明和卫星受照要求等几类[1]。

The main platform for the space elevator would have to be placed in the geosynchronous or "Clarke" orbit where satellites take 24 hours to orbit the Earth, and thereby hover above the same point on the ground.

太空之梯的主体平台将会被放在卫星全天环绕地球且保持在同一点上空的同步轨道上――或称之为克拉克轨道。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎