谐振的

Analytical solution of Smoluchowski equation, which diffusive term is constant and potential is Harmonic Oscillator form, is obtained.

给出了扩散项为常数，漂移项为谐振子位势形式的Smoluchowski方程的解析解。

With the change of cross section ratio of stepped transformer, the parabola regulation of resonance frequency is found.

发现随着阶梯形变幅杆粗细端截面比的改变，谐振频率具有抛物线状变化规律，呈现先下降后上升的趋势。

In rectangular microwave resonator, under the action of high frequency electro-magnetic field and inhomogeneous static magnetic field, the electron cyclotron resonance motion of the plasma electrons have been studied.

对矩形微波谐振腔中的等离子体，在高频电磁场和非均匀稳恒外磁场作用下的电子回旋共振运动进行了讨论。

Superior part-load efficiency is another virtue in the proposed system, for the input current of the resonant tank is decreased with the decrescence of load.

同时谐振槽输入电流随负载的减小而减小，提高系统的部分负载能效值。

The eigen energy and the degeneracy of the system are also discussed.

用时空变换法求解了带有反平方势的含时谐振子薛定谔方程，并讨论了方程的本征能量和能级简并情况。

The lowest energy level and degeneracy is discussed.

推导出了三维各向同性谐振子在均匀磁场中的能级表达式并讨论了其最低能级及其简并度的变化。

The third part is about the research on the improvement of the directivity of antennas using wire medium.

然后研究谐振腔天线一些参数的对其频带和方向性的影响。

The transmittance and dispersion relations of one-dimensional photonic crystals containing negative refraction materials were calculated.

利用这一特征可以制造高品质的宽带全方位反射镜，有望在半导体量子阱激光器、共振腔光发射二极管等光电子器中的谐振腔中发挥重要作用。

The spectrum of fiber Bragg grating can be controlled by double exposure technique. The first exposure is used to control the resonant wavelength of fiber grating by directly irradiating the naked photosensitive fiber.

该方法只使用普通Bragg位相模板，采用两次曝光技术，通过控制光纤光栅的本地谐振波长和反射率，达到控制光纤光栅谱形的目的。

In this paper we use the method of supersymmetry to discuss the invariant,obtain an eigenfunction corresponding to eigenvalue of the invariant for a harmonic oscillator with time-dependent frequency.

在采用超对称性的方法讨论了不变量，得到了变频率谐振子不变量的本征值和本征函

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。