查询词典 orbital

TIAN Wen-sheng（Chaigoubu Teachers School,Zhangjiakou 076150,China）Abstract:Taking account of δr≠0,through the equation of conservation of orbital angular momentum,orbital parameters equations on the mass change are re-deduced.

Ba星系统的星风吸积及污染因子刘俊红和仲池田文生摘要：用整个系统的角动量守恒条件代替切向动量守恒条件，且δr≠0，考虑轨道偏心率的高次项，推导了星风吸积质量及轨道参量变化方程。

Koopmans theorem is an approximation in molecular orbital theory , such as density functional theory , or Hartree-Fock theory, in which the first ionization energy of a molecule is equal to the energy of the highest occupied molecular orbital, and the electron affinity is the negative of the energy of the lowest unoccupied, i.e.

如同密度泛函理论或者Hartree－Fock理论，分子轨道理论中常用到的Koopmans 定理也是一种近似。

The ground state energies, atomic charges, bond lengths, bond angles, dipole moments, multipole moments, the molecular orbital compositions and orbital energies have been obtained.

采用RHF法对一卤代苯和卤甲基苯进行了计算，得到了它们的基态能量、原子电荷、键长、键角、偶极距、多极距、分子轨道组成和能级等。

The empty p orbital and the occupied σorbital by a lone electron pair of carbene point towards H atom and C atom of the C—H bond respectively.

卡宾空的p轨道和占有一对孤电子的σ轨道分别指向C—H键的H原子和C原子。

Based on the examples analyzed,this paper mainly discusses the impacts of the polynomial degree,fit time span and interval of the fitting points when using chebyshev polynomial to fit the satellite orbit,the situation using more orbital elements and the area and choosing of the orbital elements are also discussed at last.

以实例分析为基础，主要讨论了利用切比雪夫多项式拟合GPS卫星轨道时多项式阶数、时段长度、拟合点间隔等因素的设置问题；并对使用多组轨道参数进行轨道拟合的情况进行了分析；最后讨论了轨道参数的使用范围和选择问题；得出了有用的结论。

Eight growing New Zealand albino rabbits, each right orbital bone fragment which contained a viscerocranial suture was removed, and PTFE (expanded polytetrafluorethylene) was applied as a substitute for the orbital bone defect in four rabbits, six months later, each skull was macerated for cephalometry and radiological craniometry and histological examination.

本实验收集八只纽西兰白兔，切除含颅面骨缝的右下眼窝骨，用PTFE填补其中四只白兔的骨骼缺损处，六个月后将其牺牲做颅颜骨测量及X光颅骨计量。

The first chapter the content examines including the orbital intensity calculated that reserves the axle seam the computation, in the curve reduces axle's arrangement, the axle festival general arrangement plan, the railroad ballast amount used computation, designs the road section and the station yard cubic meter of earth and stone quantity calculates as well as mixes, railroad cubic meter of earth and stone and orbital project construction organization and budget.

第一章内容包括轨道强度检算，预留轨缝的计算，曲线上缩短轨的布置，轨节布置图的绘制，铁路道碴用量的计算，设计路段和站场的土石方量计算以及调配，铁路土石方和轨道工程的施工组织及预算。

According to by the time series estimate power spectral density\'s periodogram law principle,the research adopts five level of orbital power spectra which US Federal railway Administrative bureau FRA proposed;then,through the Fourier inverse transformation,the orbital not smooth time domain samples are obtained, which determine the track irregularity peak-to-peak value and the corresponding wave length; on the basis of the research,the influence of the wheel track dynamic contact force are considered.Based on the orbital roadbed coefficient\'s definition,computation model is established to solve the roadbed equispaced spring constant,and the roadbed uniform spring stiffness is obtained by using the numerical simulation method.Finally,based on the Matlab procedure platform,the computational procedure is established,and the load time interval caused by the moving train acts on the roadbed is obtained.

根据由时间序列估计功率谱密度的周期图法原理，采用美国联邦铁路管理局FRA提出的五级轨道功率谱，通过Fourier逆变换得到轨道不平顺的时域样本，确定了轨道不平顺的幅值及对应的波长，以此为基础考虑轮轨动态接触力的影响；基于轨道路基系数的定义建立了求解路基均布弹簧刚度的计算模型，采用数值模拟得到了路基均布弹簧刚度；最后，基于Matlab程序平台编制了计算程序，得到了运行列车作用到路基上的荷载时程。

We report a case of fatal rhino-orbital mucormycosis with the ophthalmic manifestations of central retinal artery occlusion and orbital apex syndrome. When facing orbital cellulitis in a diabetic patient, we should be alert to this fatal disease.

我们报告一个致死性白霉菌感染的病例报告，眼部表现包括中心视网膜动脉阻塞与眼窝尖端症候群，在碰到患有糖尿病的病人发生疑似眼部蜂窝性组织炎时，应该提高警觉怀疑此致命性感染的可能。

CT databased computed analysis is a reliable method to measure orbital volume , which is available to gain the area of the orbital borderline limned of each section and give a value of orbital volume in the professional format subsequently .

其以CT扫描数据为基础，通过眼眶边界描绘，利用几何公式计算出眶腔容积，是一种可靠的眼眶容积定量测量方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了