谐振子

The method of moments is used to investigate the resonant characteristics of the antenna.

提出一种新型单极子天线，天线的辐射主体由双弯折线构成，通过矩量法研究天线的谐振特性。

In order to overcome the shortcomings of the monopole antennas, a methods of quasi-fractal is used, which decrease the resonant frequency.

为此，对HF频段的单极子天线进行准分形，有效地降低了天线的谐振频率。

In the first year, a dynamic energy interpolating circuit will be developed to substitute for the static transfer switch of off-line UPS's. This circuit is able to provide the output power for off-line UPS's about half-cycle time while the utility is blackout but the inverter still no yet starts to take over the UPS output.

第一年之子计画刻正进行研制一种取代离线式不断电系统中静态转换开关之动态能量补间电路，该电路系为可在市电中断至变流器启动前，提供离线式不断电系统约半周期之输出电源之一种极低容量谐振型电路，俾使离线式不断电电源系统之运作得具零转换时间之特性。

Oscillator; simple harmonic motion; experimental measurement

弹簧振子；简谐振动；实验测量

Chapter 2 discusses the aperture couple theory which is very useful to resonant systems. The uniqueness theorem of electromagnetic fields in lossless regions and the formulation of equivalant principles are presented.

第二章利用等效原理和并矢格林函数研究了谐振系统常用的耦合方式孔耦合的一般理论和小孔耦合的偶极子模型。

By using a multiple scales method,we study the lattice vibration of a monoatomic chain taking into account the nearest neighbour and the second next nearest neighbour harmonic and anharmonic interactions.

利用多重尺度法，研究了谐振、非谐的近邻和次近邻相互作用下单原子链的晶格振动行为，发现非传播孤子在单原子链Brillouin区的任何位置均有可能存在。

All these characteristics can extend frequency band , reduce antennaelectric size and improve impedance characteristics. In order to miniaturization ofantenna, impedance complete compensate and matching optimization of electricallysmall antenna are brought forward, and this method is applied to the discage antennas.

从阻抗特性和辐射特性的实测数据表明，水加载单极振子天线的谐振频率能很好地向低端下移，局部水加载单极圆锥天线在保持原有宽频带特性的前提下，以较少的效率损失实现了较大范围向低频区扩展，即天线小型化，这将为短波超短波波段天线进一步的小型化设计提供很好的思路。

In this paper, a thin-film resistor loaded microstrip toroidal resonator is proposed, and a new type equalizer is designed with this structure.

文中提出了一种薄膜电阻加载的微带环形谐振器，并用其设计了一种新型均衡器子机构。

The two cubic potentials induce the static and the second-order harmonic parts of the discrete breathers with certain symmetry.

三次非线性势能函数的存在使系统中的离散呼吸子解具有特定对称性的直流和二阶简谐振动分量。

The boundary conditions between subzones are obtained by applying the technique of field matching to the field expressions in subzones.

给出分析复杂盘荷加载谐振腔的变分方法，由各个子区的场表达式结合场匹配技术得到了子区之间满足的边界条件。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。