F region
英 [ef ˈriːdʒən]
美 [ef ˈriːdʒən]
F区，F(电离)层
双语例句
- Effect of electric field on low-latitude storm time ionospheric f_oF_2 variations Two-dimensional simulation of high-frequency-induced large-scale irregularities in F region
电场对暴时低纬电离层foF2变化的影响中低纬电离层加热大尺度场向不均匀体的二维数值模拟 - So, Green's theorem says that if I have a closed curve, then the line integral of F is equal to the double integral of curl on the region inside.
格林公式内容是如果有一条封闭曲线，那么对F的线积分就等于，区域内F旋度的二重积分。 - What does it mean to take the average value of some function f in this region r?
在区域r上求函数f的平均值，这是什么意思？ - Scintillation spectra investigations during the evolution of irregularities in the equatorial F region
磁赤道异常区电离层F区不均匀体发展过程中的闪烁谱研究 - ∞ is not the fixed point of multiple roots Newton transform F ( z), so multiple root's Julia set is multiple and simple roots attraction region;
由于∞点不是重根牛顿变换的不动点，故重根牛顿变换的Julia集中多为重根和单根吸引域； - The Climatology Properties of the Equivalent Winds in the Ionospheric F Region
电离层F层等效风场的气候学特征 - A necessary and sufficient condition is presented first to decide whether a minimal point x0 of f ( x) is a global optimal solution of ( x), where D is a closed region in Rn.
首先给出了判别f（x）的极小值点x0∈D是否为f（x）的最优解的充分必要条件（D为Rn中的闭区域）； - Detection of Schumann resonance in the ionosphere F region
电离层F层中舒曼共振现象的检测 - Suppose that F is a family of holomorphic functions in region D.
作为它的应用之一，我们证明了一个正规定则：设F为区域D内的全纯函数族。 - The space coordinate is established which are used to describe the macroscopic instability in the ionospheric F region at mid and low latitude.
建立了一适合于考察中低纬电离层F区宏观不稳定性的空间坐标系。 - Three 2 F electrode catheters were positioned in high right atrium ( HRA), low right atrium ( LRA) and His bundle region ( HIS).
2F电极导管分别置于高位右心房（HRA）、低位右心房（LRA）和希氏束区（HIS），以最快1∶1起搏频率心房起搏3h。 - The electron density profiles of F layer were distorted severely in the course of the storm, and the key region of distortion was located at about 260 km.
在某些时段内，F区电子密度剖面产生了特殊的畸变。 - Research on Small Town of F or est Region
森工林区小城镇建设研究 - The average offset F 'and stress drop Δσ of small earthquakes in the Taiyuan-Linfen region are smaller than corresponding values for small events occurred before the great Haicheng earthquake.
太原及临汾地区小地震的平均断错F′和应力降Δσ均低于海城大震前小地震的相应数值。 - It may be effected synthetically by the low energy electron precipitation in cusp region, the high latitude plasma convection and the solar radiation, resulted in so called F region magnetic noon phenomena.
最大值在0900UT（磁中午）附近，这是极隙区软电子沉降、极区等离子体对流和光辐射电离效应等诸多因素综合作用的结果，形成了所谓的磁中午异常。 - Overall properties of F region around solar minimum at Zhongshan station, Antarctica
太阳活动低年南极中山站电离层F层的平均特性 - Ionospheric disturbances produced by atmospheric gravity waves in the equatorial F region
大气重力波产生的大尺度赤道电离层扰动 - Sample test construction of mutant t-PA cDNA with both F and EGF domains deleted and its expression culture region
t－PA指形区、上皮生长因子样区缺失突变体cDNA克隆的构建及其在哺乳动物细胞中的表达 - The results show: ended the yearly ascending tendency, the long term variation of F and Z component showed a turning respectively in 1999 and 2000, but recovered a little in some local region in recent two years;
结果：1999年和2000年F总场和Z分量长期变相继出现了转折，结束了逐年上升的变化趋势，但局部地区近两年有所回升。 - In this paper, a linear growth rate for the collisional Rayleigh-Taylor instability in the ionospheric F region of low and mid-latitudes is derived and numerical simulations for certain typical cases conducted.
本文导出了中低纬地区电离层F区中的Rayleigh-Taylor不稳定性的线性增长率，并对一些典型情况进行了数值模拟研究。 - From the atmospheric fluid equations and two-fluid equations of ionospheric plasmas coupled with each other, the coupling dispersion relation of atmospheric gravity waves and electron density perturbations in equatorial F region is derived and the resonant interaction between these two modes in different mediums is analyzed theoretically.
本文从相互耦合的大气流体方程和双流体等离子体方程出发，导出了赤道F区大气重力波和电子密度扰动的耦合色散关系，据此对两者的共振相互作用作了进一步的理论分析。 - AF2 locates in the E/ F region, with ligand-dependent transactivation function.
AF2具有雌激素依赖的转录激活功能，位于E／F区。 - The distribution characteristic of auroral electrojet in AZS, is helpful for the studies of F layer and magnetosphere coupling in polar region and aurora dynamics.
了解了极光电集流在南极中山站的分布特征，有利于极区电离层和磁层耦合及极光动力学的研究。 - A Novel MOSFET 1/ f Noise Model Based on Mobility Fluctuation for Linear Region
基于迁移率波动的MOSFET线性区域1/f噪声模型 - Fundamental properties of Rayleigh-Taylor instability and drift instability in the mid-latitude F region are studied.
本文研究了中纬电离层Rayleigh-Taylor不稳定性和漂移不稳定性的基本性质。 - Because intrinsic loss of plastic optical fiber ( POF) mostly is high harmonics vibration loss of CX bonds, if D or F replaced H of CH bonds, the high harmonics vibration loss of CX bonds in region of infrared and visible light would be decreased remarkably.
因为塑料光纤本征损耗主要是CH键的振动吸收损耗，如果用D、F替代塑料光纤材料中CH的H，CX在可见光区及红外光区的振动吸收损耗就能显著降低。 - Compared with normalizing or hot-rolled, the work hardening ratio and the strength of the wire quenched in ( F+ A) region can be obviously enhanced.
发现双相区淬火钢丝比热轧态或正火态的能显著提高加工硬化率和强度。 - Neutral wind-induced F region movements under the coupling of ionosphere-thermosphere
电离层－热层耦合系统中由中性风引起的F区运动 - Investigate the effects of electric couple of the E region and the F region and E regions finite conductivity and zonal gradient of flux tube integrated Pedersen conductivity during the development of R-T instability using flux tube integrate method. 3.
利用通量管积分方法，研究了在广义R-T不稳定性演化过程中E区和F区之间的电耦合和E区有限电导率及通量管积分Pedersen电导率的纬圈梯度的影响。