查询词典 instability constant

Objective To compare the relationship between measurement of the time constantly derived from aortic regurgitant velocity spectra and catheter derived time constant, and to evaluate the effects of hemodynamic flow states and regurgitant volumes on the Tau AR.

目的 对比研究由主动脉返流频谱得到的时间常数Tau和心导管根据左室压力曲线得到的时间常数的相关性，评估血流动力学参数和返流容积对Tau－AR的影响。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

Non-cooperative target recognition; Generalized sequentially rejective Bonferroni test ; Constant false alarm rate; Radar tracking

非合作目标识别；广义序贯拒绝检验；恒虚警；雷达跟踪

Extensive recent research efforts have established that constant-round concurrent/resettable zero-knowledge for non-trivial languages cannot be achieved in the plain model without setup assumptions.

大量和深入的最新研究已经证明对于非平凡的语言常数轮的并发及可重置的零知识系统在没有Setup假设的朴素模型下是不存在的。

Furthermore, since it is a well-known open problem whether constant-round resettable zero-knowledge systems with concurrent soundness for NP exist in the generous BPK model or not, our this work makes a significant step for finally solving this important open problem.

更为重要的是，由于对所有NP-语言常数轮且并发可靠的可重置零知识系统是否在秃公钥模型中存在是一个著名的公开问题，我们此方面的工作对于解决此一重要公开问题亦迈出了重要一步。

Extensive recent research efforts have established that constant-round concurrent/resettable zero-knowledge for non-trivial languages cannot be achieved in the plain model without setup assumptions.

我们在WPK模型下关于具有并发可靠性的可重置零知识方面的工作是对Micali和 Reyzin在UPK模型下并发可靠的可重置零知识工作(EUROCRYPT01)的一个极其重要的改进和扩充。

To achieve constant-round concurrent/resettable zero-knowledge, several famous computational models have been introduced, among which the bare public-key model is the weakest and also the most appealing one.

更为重要的是，由于对所有NP-语言常数轮且并发可靠的可重置零知识系统是否在秃公钥模型中存在是一个著名的公开问题，我们此方面的工作对于解决此一重要公开问题亦迈出了重要一步。

To achieve constant-round concurrent/resettable zero-knowledge, several famous computational models have been introduced, among which the bare public-key model is the weakest and also the most appealing one.

为了得到常数轮的并发及可重置的零知识系统一些著名的计算模型已经提出来，其中最弱同时最令人关注的是秃公钥(Bare Public-Key)模型。

To achieve constant-round concurrent/resettable zero-knowledge, several fa-mous computational models have been introduced, among which the bare public-keymodel is the weakest and also the most appealing one.

为了得到常数轮的并发及可重置的零知识系统一些著名的计算模型已经提出来，其中最弱同时最令人关注的是秃公钥(Bare Public-Key)模型。

Through a single shot experiment powered by a constant voltage charging device,it is found that when discharging in N2,the generator has the same output waveforms for both isolation configurations;but when discharging in SF6,it has a faster rise time for the resistively isolated configuration than that for the inductively isolated configuration,and the reason for this phenomenon was analyzed preliminarily.

通过恒压源充电的单次实验发现，发生器在氮气(N2)中工作时，两种隔离方式的输出脉冲波形基本一致，然而在六氟化硫(SF6)气体中工作时，电感隔离型相对于电阻隔离型的输出脉冲前沿较慢；对其原因做出了初步分析。

"Bird Man's Diary, Butting on the Love Island", Changsha, China

2008年"鸟人日记，顶在爱情岛"，中国长沙

As long as they were in the service of a family of wizards, their magic would remain dormant.

只要他们一天为家庭服务，他们的法力就潜藏不动。