查询词典 resonance state

This paper presents a low-voltage excitation with feedback method. By pre-excitations, the vibration frequency of the sensor can be got to used as the output of the driver. The feedback signal frequency is very close to the real frequency of the sensor, so the wire can reach resonance state quickly.

本文提出一种反馈式低压激振方法，降低拨弦激振电压对传感器进行预激振，将反馈的振动频率信号作为输出，对传感器进行复振，可以在很短时间内使振弦达到共振状态。

The load characteristic and control objective of parallel resonance converter is analyzed, and the conclusion that it can work on the safe side only if it works under the state of capacitive and rough resonance is drawn.

分析了并联谐振逆变器的负载特性及控制目标，通过对并联型谐振逆变器各种工作状态的分析，得出其必须工作在容性近谐振状态下才是安全可靠的结论。

For single wall carbon nanotubes, we study the nonmagnetic and magnetic impurity effects on zigzag nanotubes by Green's function perturbation method and found that the impurity effects are different for semiconducting and metallic nanotubes. Arbitrary potential can induce a bound state in semiconducting nanotubes, and resonance state in metallic tubes.

在我们的工作以前，共振态对系统磁性的贡献往往被忽略，实验上观测到的掺非磁性杂质的高温超导的磁化率呈居里—外斯形式完全归结为杂质诱导出的局域磁矩，尽管可以解释磁化率，但与一些实验产生矛盾。

Considering the adaptation to the environment, some gene of the genomes is on active state which satisfy the condition of resonance, others are on silent state which unsatisfy the condition, and the situation can turned depending on whether resonance condition is satisfied or not.

在适应环境中，满足阈值共振的基因组中的基因处於活动状态，不满足阈值共振的基因组中的基因处於"沉默"状态，阈值共振可使活动基因和"沉默"基因相互转化。

The thesis analyzes specifically the importance of free psychology state in painting from the aspects of imagination, immanent resonance and its forms, and free unbosom of affections, by giving in-depth analysis on the factors of children's free painting and combining the practice of artists. The thesis points out that art works should be produced in an involuntary state with self-consciousness.

文章通过对儿童绘画的自由因素分析，并结合艺术家的实践经验，从想象、内在的共鸣与形式、内在因素情感的自由宣泄中，具体分析了这种没有羁绊的自由境界的重要性，指出艺术家作品的显现过程应该处在一种自觉中的非自觉状态中。

The influences of the external magnetic field on the properties of the excited state of the polaron in a parabolic quantum dot are studied by using the linear combination operator and the unitary transformation method, the relation of the first internal excited state energy E1, excited energy △E and the resonance frequency ω of both the strong-and weak-coupling polaron with the effective confinement length l0 of the quantum dot, the electron-phonon coupling strength α and external magnetic field B are derived.

采用线性组合算符和幺正变换方法研究了外场对抛物量子点中极化子的激发态性质的影响，导出了强、弱耦合情况下极化子的第一内部激发态能量E1、激发能量△E、共振频率ω与量子点的有效受限长度l0、电子－声子耦合强度α以及外场B的关系。

Materials and Methods 25 patients of deep vein thrombosis in the low extremities confirmed by clinic were performed with two dimensional time of flight magnetic resonance angiograph(2D TOF MRA)and magnetic resonance direct thrombus imaging.

资料与方法对25例临床确诊为下肢深静脉血栓形成的患者进行MRA和MRDTI检查，MRA采用二维时间飞越法(2D TOF)；MRDTI选用SE T1WI、FSE T2WI、FAST(fourier acquired steady state，FAST)序列。

Light lateral and axis and torsion vibrations do not affect the normal work, but the resonance state has severity effect to drill string.

轻微的横向、轴向及扭转振动不影响钻井的正常作业，而钻柱的共振状态会对钻井产生严重的影响。

The result shows stochastic resonance phenomena existing in two different regions. One is the traditional bistable region,the other is the coexistence of the oscillation with the stable state.

利用Fink等提出的反应模型，通过计算机模拟对体系的控制参量进行周期调制和随机调制，在简单双稳区以及振荡与稳态的共存区，观察到随机共振(Stochastic Resonance： SR)现象。

Nonlinear partial differential dynamic equations of bending vibration of a tilting stepped drive shaft with two supports were built under non-inertia movement coordinate system by theorem of the motion of mass center and Heaviside function. According to the condition of equal displacement in an adjoining plane of the shaft, an equivalent shaft and its equation were obtained. A motion equation of the equivalent shaft was obtained by method of Galerkin. An approximate steady-state solution of the main resonance was obtained by method of multiple scales. The influence factors, motion stability, amplitude jump of main resonance of a stepped drive shaft and so on were analyzed.

用质心运动定理、Heaviside函数建立了非惯性系下倾料两端支承阶梯传动轴的非线性弯曲振动偏微分动力学方程，并根据相邻轴段的衔接面处位移相等的条件，得到阶梯轴的当量轴及其动力学方程；用Galerkin法得到当量轴的弯曲运动方程，用多尺度法求得稳态下当量轴的主共振的一次近似定常解，分析了影响阶梯传动轴主共振的因素、运动稳定性、振幅突变性等。

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。