在20世纪的30年代，保罗·狄拉克甚至向我们提出了一个相信单磁极存在的比较充分的理由，他表示单极的存在可以反过来解释电子的存在。
In the 1930s, Paul Dirac gave us an even better reason to believe in monopoles, when he showed that their existence would in turn explain the existence of electrons.
有一段时间，美国的力量曾遭到苏联的制衡，但自从冷战结束之后，美国已经成为单极世界的唯一超级大国。
For a while, U.S. power was checked by the Soviet Union, but since the end of the Cold War, America has been the sole superpower.
享乐主义者是最谨慎的时间旅行者，他们会跟随吉本前往古罗马，或是计算好自己出生的时间来躲过世界大战的征兵，同时又尽情享受美国单极主导下的和平时代。
Epicures, the most prudent time-travellers, will follow Gibbon to Rome, or time their birth to dodge a call-up for the world wars and surf the Pax Americana.
正如Saltzberg所说，自jamesClerkMaxwell(詹姆士·克拉克·麦克斯韦)首先提出他那著名的四个描述电磁场的方程以来，科学家们便着迷于磁单极子的探查中。
As Saltzberg says, scientists have been tantalized by the prospect of magnetic monopoles since James Clerk Maxwell first formulated his famous four equations describing electromagnetism.
本文描述了一种单极子微带天线耦合的SIS结混频器。
A monopole microstrip antenna coupled SIS Junction mixer is described in this paper.
这一情绪标志着彻底告别布什（Bush）时代的盛气凌人和“单极时刻”。
This mood marks a complete break with the aggressive confidence of the Bush years and the "unipolar moment".
采用时域有限差分法对比计算了加载与非加载单极子天线的时域辐射特性。
Therefore the time domain characteristics of loaded monopole antenna are calculated and analyzed using FDTD method.
该方法可适用于HVDC单极离子流场的计算分析。
The method presented is applicable for the analysis of HVDC unipolar ionized field.
本文叙述了超导单极电机液氦异型杜瓦容器的结构特点和制造工艺。
The structure feature and fabrication technology of a special-shaped LHe dewar for superconducting unipolar motor are described.
单极感应是轴对称磁体绕其对称轴转动时产生的一种特殊的电磁感应现象。
Unipolar induction is a special electromagnetic induction phenomenon which occurs when a cylindrical magnet rotates around its symmetrical axis.
为了实现波束可控，可用开关控制无源单极子的接地状态来改变其阻抗和电流分布。
In order to get beam steering, the switches control the states of the parasitic monopoles to change their impedance and current distribution.
本文利用矩量法分析任意形状导体地面上的线栅型圆锥单极子天线。
Wire conical monopole antennas at an arbitrarily conducting ground plane are analyzed by the Method of Moment (MM).
单极本征函数在不同动力学0(2,1)基底中的代数规律性表明径向相空间的对称性。
The algebraic regularity of monopole eigenfunctions in various dynamical0 (2, 1) basis shows the symmetry in radial phase space.
对放电中出现的破裂不稳定现象作了观测，并用表面探头观察了放电中的单极弧。
Disruptive instabilities of the discharge have been observed. Unipolar arcs are investigated with surface probes.
但是，如果目标是精确的重放声音的话，一个扬声器必须是声学上的点声源(单极点，全向响应)，或者是一个声学上小的双向源(偶极)。
But if the goal is to reproduce sounds accurately, then a speaker must be either an acoustic point source (monopole, omni-directional) or an acoustically small bi-directional source (dipole).
提出了一种分析有限尺寸圆盘地面上套筒单极子天线的新方法。
A novel method is proposed for analyzing the sleeve monopole at the center of a circular ground plane.
本文以铁道信号电源为背景，研究了一种单极性调制的逆变电源。
Based on the power supply for railway signal system, this dissertation investigates an inverter controlled by the strategy of unipolar modulation.
在这种情况下会产生横波首波，因此可以使用基于单极子传感器的标准技术测量地层横波。
In such conditions a shear head wave is generated, so that standard techniques based on monopole transducers can be used to measure formation shear velocity.
研究发现杆塔电位包括可变的抵消分量和雷电单极电荷引起的恒定分量两部分。
It is found that the potential of the tower system is composed of two components, that are, the variable offset potential and the constant potential caused by unipolar charges of the lightning.
在平面单极子天线的末端采用蛇形结构，并在适当的位置加载，将大大减小天线尺寸，扩展阻抗带宽。
Using snake structure at the end of the planar monopole and adding load at proper position can decrease the size greatly and broaden the impedance bandwidth.
从运动磁单极子产生的流密度方程出发，研究了在中心力场中沿双曲线运动磁单极子辐射能量谱，并对其进行数值计算。
Base on the current density caused by the moving monopole, the hyperbola radiation spectrums of monopole in the central force-field are studied in detail and numerical value calculated in this paper.
研究了一种快速精确计算有限尺寸圆形导体地面上套筒单极子天线的新方法。
A new moment method is presented to analyze sleeve monopole antennas at the center ofa circular ground plane.
对磁单极进行了讨论，说明在实物世界中磁单极子是不存在的，设想在真空世界中磁单极子是存在的。
This paper discusses the existence of the magnetic monopole, the conclusion of which is that the magnetic monopole does not exist in the material world but exists in the hypothetical vacuum world.
特别地，磁单极子可以存在于称为“Dirac弦”的，也就是携带磁场的长管的两端。
Specifically, monopoles could exit at the ends of long tubes carrying magnetic fields called "Dirac strings.
本文主要是利用动态打靶法证明这种新的磁单极子的存在唯一性，同时也得到了解的渐近估计。
In this paper, we mainly prove the existence and uniqueness of the new monopole by dynamical shooting method, and present sharp asymptotic estimates for the solutions.
从本质上讲，国际上围绕NMD问题的争论，是关于建立何种国际秩序的争论，是单极与多极之争。
The international debate around the NMD issue is, in essence, about what kind of international order should be established, and a choice between unipolar and multipolar world.
福尔摩斯插话说，“哦，”他赶在青年询问自己的这番迅捷而又准确的推理的原委之前说道，“哦，道理简单极了。
"Oh, " he went on before the other could ask the reasons of his swift and accurate deductions, "oh, it's very simple.
这个屋子里的大多数人、在大多数时间所经历的单极世界的时代已经一去不复返了。
The globe is no longer going to be mono-polar in the way it has been for most of the life times of most of the people in this room.
这个屋子里的大多数人、在大多数时间所经历的单极世界的时代已经一去不复返了。
The globe is no longer going to be mono-polar in the way it has been for most of the life times of most of the people in this room.
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