查询词典 at the threshold of

In this paper an order tracking technique and double threshold trigger technique are developed to ensure the synchronous data acquisition and to eliminate the disturbance and noise in rocket speed signal.

由此可保证各倍频分量幅值的精度，减少频率泄漏，同时保证了各帧数据具有相同的相位基准。同步、同相基整周期采集需由转速信号触发采集来实现。一般情况下，涡轮泵转子上的测速盘为多齿盘。

It was found that a slightly colder threshold for seeding effect to occur for silver iodide than for dry ice (-5 to -10℃ for silver iodide versus -3 to -4℃ for dry ice).

实验发现，碘化银北京英语培训推荐播撒效果的临界温度比干冰略低（碘化银为-5℃到-10℃，而干冰为-3℃到-4℃）。

It were searched those a slightly colder threshold for seeding effect to occur for silver iodide than for dry ice (-5 to -10℃ for silver iodide versus -3 to -4℃ for dry ice).

实验呈现，碘化银产生播撒效果的临界温度比干冰略低（碘化银为-5℃到-10℃，而干冰为-3℃到-4℃）。

Chapter four studies the chaotic responses in a system consisting of simple pendulum and harmonic oscillator under bounded noise excitation. Firstly, the Melnikov function of the two-degree-of-freedom system under Hamiltonian perturbation is derived. The essential condition of the autonomous system for the probable onset of chaos is obtained, the Poincare maps of the system under small Hamiltonian perturbation and the effect of increasing perturbation on the Poincare maps are studies. Then for the non-autonomous system under damping and harmonic or bounded noise excitation, the largest Lyapunov exponent and Poincare maps are calculated. From the analysis of the largest Lyapunov exponent, the critical criterion for the onset of chaos, and the conclusion that the threshold of bounded noise amplitude for the onset of chaos in the system increases as the intensity parameter of Wiener process increases are obtained. The result from the analysis of Poincare maps is in agreement with that obtained from the Largest Lyapunov exponent. The effect of varying damping coefficient and intensity parameter of Wiener process is also analyzed.

第四章研究了有界噪声激励下的两自由度单摆—谐振子系统的混沌运动，首先推导了该两自由度系统仅在Hamilton扰动下的Melnikov函数，得到该自治系统可能产生混沌的必要条件；研究了该系统在小的Hamilton扰动和增大摄动情形下的Poincare截面；然后对有阻尼、谐和或有界噪声激励下的非自治系统数值计算了其最大Lyapunov指数和Poincare截面；从Lyapunov指数分析得到了这个两自由度系统产生混沌运动的临界条件及产生混沌的临界激励幅值随Wiener过程强度参数值的增大而增大的结论，Poincare截面分析的结果亦符合Lyapunov指数分析的结论；研究了Wiener过程强度参数、阻尼系数变化对Poincare截面的影响。

A method based on fractional Talbot effect is studied for single-shot measurement of laser-induced damage threshold.

介绍了一种基于分数泰伯效应的单脉冲激光损伤阈值测量方法。

In the cryptography research, the paper also educes a series of singular nonlinear feedback functions which can produce another kind of regular sequences; in the addition, the paper points out the forge signature attack about a kind of threshold digital signature scheme, gives the example and mend measure Secondly, the paper introduces the whole design of the monitoring master, which consists of master and slave principle, modules adopted and the module parameters, circuit diagram designed and so on.

其次，对监控座机的整体设计进行了描述，包括座机系统的工作原理、各个组成部分模块的选择及工作线路设计等，也附带介绍了蓝牙子机设计中采用的工作模式。

Video of the network, in most of the video site Maiguo licence threshold, the intensity of the continuing operation of means will continue.

对于网络视频，在多数网站迈过了视频牌照的门槛后，大力度的持续运作手段将会继续。

You just as the net was the second batch issued by the State Administration of Radio video website operators licence, the vice president Xu Haoyu in the "China Electronics News" said in an interview with reporters:"licence to the site of a long-term impact of , Access to video site licence is the foundation of the survival and development, the licence is video site will have a threshold."

悠视网刚刚在第二批获得了国家广电总局颁发的视频网站经营牌照，其副总裁徐浩宇在接受《中国电子报》记者采访时表示："牌照对网站的影响是长期性的，获得牌照是视频网站生存和发展的基础，因此牌照是视频网站必过的一个门槛。"

It is found that generally the hydrologic noises exhibit skew characteristics, so that it is reasonably to use skew probability distribution to describing the noise components, and the wavelet coefficient threshold obtained by optimal entropy criterion based on information entropy theory in the global optimum.

分析结果显示，水文序列中的噪声成分具有偏态特性，因此本文应用偏态分布线型对噪声成分进行描述更为合理，而且小波系数阈值优选熵准则所得的阈值是基于信息熵理论而确定的，因此是整体上最优值。

Because this moment at the threshold of a group is so momentous for a child, it is also, as one researcher put is,"highly diagnostic… quickly revealing differences in social skillfulness."

因为这个瞬间在"社交门槛"上对于一个孩子如此重要，如同一个研究人员所说，"高效诊断…快速识别社交能力的差异"。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。