1) resonant triad
共振三波
1.
The idea of resonant triad in the theory of hydrodynamic stability is used to develop the theoretical mode of symmetrical and unsymmetrical single coherent structure in wall region of turbulence boundary layer.
本文利用流动稳定性理论中的共振三波概念,构造湍流平板边界层近壁区对称与非对称单个相干结构的理论模式,采用紧致有限差分及Fourier谱展开相结合的方法,数值计算湍流平板边界层近壁区对称与非对称单个相干结构的演化规律,详细分析了对称与非对称单个相干结构的演化结果,得到了一些有意义的结果。
2.
The theoretical model of the coherent structure in the wall region of a turbulent boundary layer was proposed, using the idea of general resonant triad of the theory of hydrodynamic stability.
利用流动稳定性理论中的一般共振三波的概念 ,提出了湍流边界层近壁区域相干结构的理论模型 。
3.
The theoretical model of the coherent structures in the wall region of a turbulent flow is proposed, using the idea of resonant triad of the theory of hydrodynamic stability.
从流动稳定性理论中的共振三波出发，提出了近壁湍流相干结构的理论模型，采用紧致有限差分和 Ｆｏｕｒｉｅｒ 谱展开相结合的方法对近壁湍流相干结构进行了数值模拟。
2) resonant triad
三波共振
1.
The results show that mechanisms of both resonant triad and secondary instability do exist.
结果表明,三波共振和二次失稳这两种机制都存在。
3) general resonant triad
一般共振三波
1.
By using the idea of general resonant triad, the mechanism for the origin and evolution of the coherent structures are investi-gated with the algorithm.
本文针对湍流流场中普遍存在的非对称相干结构,发展了一套可用于计算相于结构非对称理论模型的计算方法,并运用该方法研究了由流动稳定性理论提供的相干结构非对称模型——一般共振三波的演化规律,计算结果与实验及数值模拟基本一致。
4) harmonic resonance
谐波共振
1.
Experiment research of difference between nonresonant natural vibration and harmonic resonance of object;
物体的非共振固有振动与谐波共振的区别实验研究
2.
Harmonic resonance is a key factor to identify the rotor crack.
谐波共振是识别转子裂纹的重要依据 ,但由于转子裂纹的弱激励、非线性、非平稳等特性 ,导致利用传统信号处理方法不能准确有效地获取系统的谐波共振特性 ,从而难于识别出裂纹 ;小波时频分析方法是处理非线性、非平稳信号的强有力工具 ,将小波时频分析方法引入到裂纹识别的仿真研究中 ,基于建立的裂纹转子动力学模型 ,分析了利用小波时频分析方法识别裂纹的可行性。
3.
Based on the frequency fission from some modulating unit,the frequency con-struction of response is known and some frequency criterion are established for harmonic resonance un-der multifrequency harmonic and modulation parametric excitation.
本文采用调制反馈法分析单自由度受迫振动在参数激励条件下的响应，，从调制环节的频率裂解出发，得到了振动响应的频率结构形式，建立了多谐参数，调制参数激励下的谐波共振条件，并且对典型参数振动系统进行了仿真和实验结果验证。
6) resonant wavelength
共振波长
1.
Using it, the relationship between refractive index and resonant wavelength of different concentrations from 0% to 70% glycerin solution are measured.
通过自行设计的一套光纤表面离子体波传感器测试系统 ,测定了从 0 %～ 70 %的不同浓度甘油水溶液折射率与共振波长的关系 ,实验结果具有较好的重复性并和理论分析相吻合。
2.
The resonant wavelength, which is a key parameter, has been calculated theoretically in terms of the conditions of surface plasmon resonance, and the maximum measurement range of optical fiber SPR sensors is given out while other parameters are fixed.
根据表面等离子体波的共振条件计算了光纤SPR传感器的关键参数———共振波长 ,并且给出在一定条件下传感器的最大量程。
3.
Through the measurement to different quality fraction glycerite,useful information is obtained that the resonant wavelength of SPR spectrum is changed with the refractive index of environmental media,and the feasibility is validated to detect environmental media using the sensor.
通过对不同质量分数的甘油溶液进行测试,获得了SPR光谱共振波长等随待测环境介质折射率变化的有效信息,证实了使用这种传感器进行环境介质检测的可行性。
补充资料：电子自旋共振(见电子回旋共振)
电子自旋共振(见电子回旋共振)
electron spin resonance
电子自旋共振eleetron spin resonanee见电子回旋共振。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条