fluctuation [,flʌktʃu'eiʃən]

fluctuation的基本解释

n.

波动, 变动, 动摇, 起伏

与fluctuation相关的网络例句 [注：此内容来源于网络，仅供参考]

The results show:① The predominant period bands represented in the lowfrequency fluctuation field are interseasonal fluctuations of 6 pentads (30 days) and 10 pentads (50 days) and the intraseasonal fluctuations of 15 to 17 pentads (75 to 85 days).② The 30day fluctuation period is an intrinsic fluctuation of the pentad precipitation in rainy season of Yunnan Province.③ When El Nino or La Nina happens, there is a 50day fluctuation period in the pentad precipitation in rainy season of Yunnan.④ While there is a 75-85 day fluctuation period in the pentad precipitation in rainy season of Yunnan, the precipitation anomaly percentage in the main flood period in Yunnan is positive; on the contrary, while there is no 75-85 day fluctuation, the precipitation anomaly percentage is negative.

结果表明：①云南地区雨季降水主要低频振荡周期为6候(30天)，10候(50天)的月际振荡和15～17候(75～85天)的季节内振荡；②云南雨季的候降水每年都存在30天振荡周期，30天振荡是云南雨季固有的振荡；③当发生El Nino或La Nina异常气候事件时，云南雨季的候降水存在50天振荡周期；④当云南雨季存在75～85天振荡时，云南主汛期(6～8月)降水距平百分率为正(除2000年为零距平)；当云南雨季不存在75～85天振荡时，云南主汛期降水距平百分率为负。

The results reveal that spectra obtained by different parametric methods are similar. The spectra of normal cells' voltage have only one noticeable lobe due to fluctuation of molten alumina at anodes, while spectra of other abnormal cells have one mainlobe and one sidelobe. In cells with carbon in bath the spectral mainlobe of cell voltage is still due to the fluctuation of molten alumina at anodes and the sidelobe is due to the fluctuation of carbon in bath; in cells with metal pad wave, the spectral mainlobe is due to metal pad waving and the sidelobe is still due to the fluctuation of molten alumina at anodes. Compared with wavelet packet analysis, spectral analysis is simpler and takes less time in calculation, which is a big merit in the large-scale application of online diagnosis systems of working conditions in aluminum reduction cells.

研究结果表明：不同的参数估计法得到趋于一致的频谱分析结果，正常槽只有1个尖锐谱峰，对应于阳极下熔融氧化铝涌动的特征峰，其他故障槽都有2个特征谱峰，即1个主峰和1个次峰，碳渣槽的主峰仍然对应着阳极下熔融氧化铝涌动特征峰，次峰对应悬浮碳渣的涌动特征峰；铝液波动槽主峰对应铝液波动特征峰，次峰对应着熔融氧化铝涌动的特征峰；频谱分析相对于小波包分析具有算法简单、耗时少、物理意义明确等特点，在槽况在线诊断系统的大规模推广中具有优势。

Fast Fourier transformation and autoregressive model estimation, are the most common methods used in the frequency domain analysis. The fluctuation in the highfrequency bands are mediated by parasympathetic control, whereas the fluctuation in the low frequency bands are mediated by both sympathetic and parasympathetic nervous systems. The origin of the fluctuation in the very low and ultra low frequency ranges are less obvious.

频域分析法一般是利用快速傅位叶转换或自动回规模型估计法，高频处的变异是由副交感神经系统调控，低频处的变异则是由副交感神经系统共同调控，至於极低频处与超低频处的变异，其原因尚待厘清。

与fluctuation相关的网络解释 [注：此内容来源于网络，仅供参考]

fluctuation：波动

这两个维度可以组合成五个促进条件:动力(intention)、自由(autonomy)、波动(fluctuation)或创造混沌(creativechaos)、冗余(redundancy)、必需的多样性(requisitevariety),从而构成了"知识产生过程的五阶段模型".

fluctuation：起伏

分子内的研究包括大分子的起伏(fluctuation)和稳定、蛋白质分子内部特定点位延长荧光寿命,但同时也增加了三价态(triplet-state)的寿命. 因此有必要寻找针对每一

fluctuation：变动

在今年九月份>期刊(Science)当中,由Scripps Research Institute 的Boehr与同事发表的一篇文章显示酵素在结构上的变动(fluctuation)有助於增加酵素与受催化物质结合的机率,而在文章中更提出酵素结构上的变动可进一歩牵涉到整个反应作用的循环机制,

fluctuation：涨落

现在的问题是,一切因素,包括环境的干扰,系统自身的摄动与涨落(fluctuation)都属干扰之列. 或执行器(executor)上,如动物的肌肉,自动机中的马达等,它将指令信号或偏差信号转是受偏差信号导向的,

economic fluctuation：经济波动

economic balance 经济平衡 | economic fluctuation 经济波动 | economic depression 经济衰退