transition frequency

With the third steps and the fourth steps natural frequency vibration, the smaller close to the second crank arm of crankshaft and round place natural frequency of the main shaft transition the position is.

以第3阶和第4阶固有频率振动，位置越靠近曲轴第二个曲柄臂与主轴过渡圆处固有频率越小。

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The computation results show that there exists serious stress concentration on the fractured section of the shaft. The main reasons of high frequency fatigue fracture of the shaft are that the small transition radius and the tensile stress caused by the tightening torque of the bolt.

结果表明，花键轴断裂处存在严重的应力集中，花键轴断裂处过渡圆弧半径过小以及未对螺栓拧紧力进行控制是导致轴产生高周疲劳破坏的主要原因。

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And it presents an estimation method for frequency difference by means of data synchronization selecting the time window of AFC frequency difference estimation hi order to solve the problem that data symbol transition induces an enormous error of frequency difference estimation.

针对AFC频差估计中数据突变引起频差估计较大误差的问题，提出了利用数据符号同步对AFC频差估计时间窗口选择的AFC频差估计方法。

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this paper presents some experiment results based on the theoretical analyses given in the paper "the majorana transition frequency shift in cesium beam atomic frequency standards" published in 1983.

本文介绍根据《铯原子束频标中的Majorana跃迁频移》一文的理论分析结果进行的一些实验。

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When a chipped divergent atomic beam interacts with a chipped divergent laser beam in space, atoms will be excited to upper state and then emit fluorescence, if Doppler frequency shift equals the difference between the atomic transition frequency and the laser frequency.

发散的片状原子束和发散的片状激光束在空间相互作用，当多普勒频移等于原子跃迁频率和激光器频率之差时，原子被激发并在空间发光。

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For the exactly soluble case of unidirectional ring laser with a homogeneous broadened line, the frequency shift relation, the critical and threshold value of inversion, the phase transition behavior and the features of the two-photon lasers with injected signal are analysed.

就可以精确求解的均匀展宽、单向环形激光器的情形，分析了频率位移关系，反转度的临界值和阈值，相变行为，以及带有外加讯号的双光子激光的特性。

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This paper mainly introduces a solution about the last frequency transition circuit of Rb atomy frequency standard, which is based on FPGA+ DDS technology.

对铷频标电路部分最终的频率变换级提出了一种基于FPGA+DDS的解决方案。

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the majorana transition frequency shift in cesium beam atomic frequency standards is theoretically investigated in this paper.

本文对铯原子频标中的Majorana跃迁频移进行理论上的探讨。

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But the transition frequency reduction is not obviously during the sequential transfer.

但在连续传输时,它对翻转率降低不明显.

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The standing wave laser field is applied to the upper transition with the Rabi frequency dependent on the position through which the atom passes.

驻波激光场与级联原子的上跃迁耦合，其拉比频率依赖于原子通过驻波场的位置。

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Every transition state is confirmed by the numbers of virtual frequency and the intrinsic reaction coordinate ( IRC) paths.

通过振动分析的虚频数和内禀反应坐标（IRC）计算，确认了反应涉及的每一个过渡态。

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Method of Time-dependent Perturbation for the Multi-quantum Transition with Radio Frequency

射频多量子跃迁的含时微扰方法

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