高频近似的英文

• high-frequency approximation

• "高频"英文翻译    high frequency
• "近似"英文翻译    approximate; similar; approa ...
• "近似" 英文翻译 :    approximate; similar; approach; approximation; roughness; propinquity 和 ... 有些近似 be somewhat similar to ...; 一个与真实生活极为近似的情况 a situation that closely approximates real life; 烯空气跟空气十分近似。 olefin gas closely approximates air. 我和他的看法近似。 my opinions are similar to his.; 近似成本 approximate cost; 近似度 degree of approximation; 近似计算 approximate calculation; approximate treatment; numerical evaluation; proximate calculation; analog computation; 近似值 approximate value; approximation; approach
• "高频" 英文翻译 :    high frequency 超高频 ultra high frequency (uhf); 甚高频 very high frequency (vhf); 高频安培计 high frequency ammeter; 高频保护装置 carrier current protection; 高频变换器 high-frequency converter; 高频变压器 high-frequency transformer; 高频传导 high-frequency transduction; 高频电焊 high-frequency welding; 高频电话通道 high-frequency telephone channel; 高频电缆 high-frequency cable; 高频电炉 high-frequency furnace; 高频电路 high-frequency circuit; radio circuit; 高频电桥 high-frequency bridge; 高频电容器 high-frequency capacitor; radio-frequency capacitor; 高频电位器 high-frequency potentiometer; 高频电源 high-frequency electric source; 高频电阻 alternating-current resistance; effective resistance; high-frequency resistance; [电工] radiofrequency resistance; 高频二极管 high-frequency diode; 高频发电机 ultrasonic-frequency rotory generator; alternator transmitter; 高频发生器 [电子学] radio-frequency generator; 高频放大 high-frequency amplification; 高频放大管 high-frequency amplifier tube; hf amplifier tube; 高频放大器 high-frequency amplifier; radio-frequency amplifier; radio amplifier; 高频放电 high-frequency discharge; 高频放电管 high-frequency discharge lamp; 高频干扰 high-frequency interference; 高频干燥(法) high-frequency drying; 高频干燥炉 high-frequency drying stove; 高频感应电炉 high-frequency induction furnace; 高频感应焊机 high-frequency induction welder; 高频感应炉 efco-northrup furnace; [冶金学] high-frequency induction furnace; 高频感应线圈 radio-frequency induction coil; 高频功率 high-frequency power; 高频焊机 high-frequency induction welder; 高频焊接 high-frequency dielectric welding; high-frequency welding; radio-frequency welding; high-frequency soldering; 高频继电器 high-frequency relay; rf switching relay; 高频检波器 rectifier; 高频雷达 hf radar; 高频脉冲 high-frequency impulse; 高频失真 high-frequency distortion; 高频示波器 ondograph; high-frequency oscillograph; 高频手表 high-frequency watch; 高频手术刀 radio knife; 高频探伤法 high-frequency flaw detection method; 高频探头[针] high-frequency probe; 高频陶瓷 high-frequency ceramic; radio ceramics; 高频天线 high-frequency antenna; 高频同轴电缆 coaxial cable for high-frequency; 高频线圈 high-frequency coil; radio-frequency coil; 高频效应 high-frequency effects; 高频信号发送器 high-frequency [hf] signal generator; 高频选矿 high-frequency separation; 高频扬声器 tweeter; 高频遥测系统 high-frequency telemetering system; 高频载波 high-frequency carrier; radio-frequency carrier; 高频载波电报 high-frequency carrier telegraphy; 高频载波系统 high-frequency carrier system; 高频凿岩机 high-frequency rock drill; 高频噪声 high-frequency noise; 高频振荡 higher-order of oscillation; high-frequency oscillation; 高频振荡器 high-frequency generator; hf oscillator (hfo); high-frequency oscillator; radio-frequency oscillator; 高频振动 dither; higher-mode vibration; 高频振动用电动机 dither motor; 高频质谱仪 mass synchrometer; omegatron; 高频阻流圈 hf choke; radio-frequency choke
• "近似；近似法；近似值" 英文翻译 :    approximation
• "近似近似值" 英文翻译 :    approximation
• "近似量, 近似值" 英文翻译 :    approximate quantity
• "超高频,特高频" 英文翻译 :    ugf
• "高频；高频率的" 英文翻译 :    high frequency
• "高频高频" 英文翻译 :    high frequency
• "甚高频,特高频" 英文翻译 :    vhf
• "lcao近似" 英文翻译 :    lcao approximation
• "wkb近似" 英文翻译 :    wkb approximation
• "粗近似" 英文翻译 :    rough approximation
• "大约，近似" 英文翻译 :    approx approximately
• "点近似" 英文翻译 :    point approximation
• "估计，近似" 英文翻译 :    estimation
• "近似, 约计" 英文翻译 :    be approximate to
• "近似，逼近" 英文翻译 :    approximation approximation
• "近似，约计" 英文翻译 :    a rox. a roximately; approx. approximately
• "近似；接近" 英文翻译 :    proximity
• "近似的" 英文翻译 :    approx approximately; approximate rho; approximative; coarse; proximal; relative; resemblance; rough
• "近似地" 英文翻译 :    approx approximately; approximatively
• "近似点" 英文翻译 :    approximation points
• "近似度" 英文翻译 :    degree of approximation; zero of approximation

• High frequency approximate solution of wave equation of bit vibration source in seismic while drilling
  随钻地震钻头震源波动方程的高频近似解法
• ( 2 ) the symplectic integrator method is applied to the high frequency asymptotic evolution of the wave equation based on maslov symplectic geometrical theory
  ( 2 )将辛算法运用到基于masiov ?辛几何理论的求解波动方程的高频近似方法中。
• Furthermore , there are complex structures such as the engine fans at the end of the inlets . it ' s hard to deal with such problems if we use high frequency method or low frequency numerical value method only
  对于厘米波段雷达而言，进气道属于电大尺寸目标，其终端有涡轮叶片之类的复杂结构，单用高频近似法或低频数值法都难以解决。
• Such limit is not due to the method itself , but is due to the limits of the speed and memory of computers . at present , we mainly use the high - frequency approximate method to analyze the electrical - large size target whose shape is relatively regular
  矩量法不适于分析电大尺寸的物体，这种限制不是由于方法本身，而是硕士学位论文凡1入ster ’ 5th卜515由于计算机速度与存储能力的限制。目前主要采用高频近似方法来研究电尺寸较大而形状相对规则的目标。
• But using the high - frequency approximate method to deal with the coupling of parts of electrical - large size target is troublesome as well as not accurate . combining the moment method and the high - frequency approximate method is a development trend and study way in the future
  但高频近似方法对于电尺寸大而形状很复杂的散射体各部件之间的相对祸合处理起来有些麻烦且不很精确。将高频近似方法和数值方法(如矩量法)相结合，是以后的发展趋势和研究方向。
• The important parts of this work consist of : 1 . the high frequency asymptotic evaluation of wave equations in nonhomogeneous medium by maslov ' s method is systematically studied , and formulations of the high frequency asymptotic evaluation in nonhomogeneous medium which varying only in one direction are constructed
  本论文的工作作为国家自然科学基金地震波传播与成像项目( no . 40174032 )的一部分，得到如下结果： (一)论文分析了利用maslov方法求解非均匀介质中波动方程高频近似解的基本原理和求解过程，构造了介质系数只在一个方向变化时波动方程高频近似解的通用计算公式。
• At the same time , as more and more radio sources have been set up , electromagnetic pollution in urban area becomes more serious , which is harmful to people ' s healthy and communication system so it is necessary to simulate the electromagnetic propagation in urban area by computer being an approximate hf method in evaluating em scattering ， the complex ray method （ crm ） is valuable in actual applications ， mainly benefited from its simple physical model ， convenient mathematical formulation and computational efficiency , especially with the scenes of scattering from complex objects based on the condition mentioned above , a hybrid ray model of the urban area electromagnetic wave propagation prediction was established with the foundation of ray tracing theory and complex ray theory
  复射线技术作为一种求解波场问题的高频近似方法，由于其具有物理模型简单、数学处理方便、计算效率高等优点，在复杂的目标散射特性分析等应用领域中有着重要的应用价值。基于以上的情况，本文在射线追踪理论和复射线理论的基础上，为城区环境建立了混合射线预测模型。本文采用椭圆模型对已有的射线追踪方法进行加速，并将复射线理论应用到城区环境电波传播预测中，提出新的预测方法混合射线方法。
• Since the cause of caustics phenomena is that the tangent plane of lagrange submanifold in caustic fields is perpendicular to the original physical space , we solve the high frequency asymptotic problem in a new mixed space by changing the projecting direction , then we get the high frequency asymptotic solutions of wave equations efficiently near and on the caustics
  由于出现焦散现象的原因在于lagrange子流形在该处的切平面与物理空间垂直，通过转换适当的投影方向，然后将这个投影方向上得到的高频近似解再变换回到原来的物理空间中，得到了在焦散附近适用的高频近似解。
• This thesis discusses maslov ' s method , wavelet transform and their applications to asymptotic evaluation of wave equations in high frequency fields . the method of solving wave equations in caustic domain by symplectic geometrical theory , and the method of simplifying two - dimension wave equations in slowly varying nonhomogeneous medium by wavelet - transform theory are proposed . the caustics phenomena of electromagnetic wave propagation in concave reflector , the singularities of caustics , and the method of computing wave fields in and far away from the caustics in concave reflector are also discussed
  本论文探讨了maslov方法在波动方程高频近似中的应用及焦散区的具体求解方法；讨论了用小波变换化简二维非均匀缓变介质条件下的波动方程；本文还讨论了凹面反射的焦散现象、凹面反射焦散区的奇性种类，讨论了二、三维凹面反射波动场非焦散区、焦散区的计算方法。
• From 1920s up to now , various techniques and methods for wave field decomposition , propagation and migration / imaging have been well developed , such as the kirchhoff asymptotic method , frequency - wavenumber domain phase - shift and phase - shift - plus - interpolation methods , and the one - way wave equation based phase - screen and generalized screen methods , etc . wave field extrapolation in these methods is implemented based on the expansion of the wave field by sets of basic functions like spatial fourier harmonies , modes , and green ' s functions
  自上个世纪二十年代至今，波场分解、传播与偏移成像技术经历了将近一个世纪的发展，形成了多种不同的方法，如kirchhoff波动方程高频近似解方法，频率-波数域的相移( phase - shift )方法和相移-内插( pspi )方法，以及在混合域中基于单向波动方程的相位屏、广义屏方法等。