频率

The results described above demonstrated that physiological AAI pacing increased CO remarkedly by preserving original LVEF and SV, while nonphysiological VVI pacing and physiological DDD pacing restricted the increase in CO as a result of reduced LVEF and SV.

其血流动力学效果表现为，生理性AAI起搏能在保持原有LVEF和较高SV较高的基础上，随起搏频率的增快，CO呈线性增加，而VVI和DDD起搏则由于LVEF、SV随频率增加而有所降低，致使CO增加受到限制。

At last, the proposed algorithm is simulated under such conditions as sinusoidal voltage, nonsinusoidal voltage, frequency fluctuation, sampling frequency and sampling time length in change.

最后分别在电压无畸变、电压含谐波、电压频率波动、采样频率以及采样时间长度变化时，对文中提出的介损测量正交分解法进行仿真验证，并与谐波分析法进行比较分析。

Malaianus, H.verticillata et al, whose occurrence rate was 100% and weight percent was 85.6%; Secondly, it can feed on humus of organism, whose occurrence rate was 100% and weight percent was 10.0%; Thirdly, it can also feed on a little Filamentous alage, Floating algae, Zoonplankton, Oligochaeta, Tendipes, Procambarus clarkii et al, whose occurrence rate was less than 10%,and weight percent was only 5.4%.

食性 克氏原螯虾(体长3.0cm～10.6cm，体重1.6g～80.3g)的摄食种类主要是竹叶眼子菜、黑藻等大型水生植物，出现频率达100％，重量百分比达85.6％；其次是有机碎屑，出现频率达100％，重量百分比为10.0％；同时还有少量的丝状藻类、浮游藻类、浮游动物、寡毛类、摇蚊幼虫、克氏原螯虾的残体等，这些种类出现率都小于10％，重量百分比仅为5.4％。

By blending the high frequencies from one picture with the lows from another, Oliva create images that change as a function of distance and time - allowing her to parse how humans absorb visual information.

通过将一幅高频率的画和另一幅低频率的画混合，奥利瓦创造出可随距离和时间变化而改变的图像，这有利于她剖析人类是如何吸取视觉信息的。

With the frequency and mode shape being regarded as functions of damage parameters, the overdetermined algebraic equations with damage parameters as unknowns can then be constructed by differentiating frequency and mode function on the basis of structure mode finite element formula, the damage parameters of which are obtained via Taylor expansion.

本方法从结构模态有限元算式出发，把频率和振型看作损伤参数的函数，经过泰勒展开获得频率、振型对损伤参数的一阶偏导数，然后构造以损伤参数为未知量的超定线代方程组，求解得到全部损伤参数值。

With the frequency and mode shape being regarded as functions of damage parameters, the overdetermined algebraic equations with damage parameters as unknowns can then be constructed by differentiating frequency and mode function on the basis of structure mode finite element formula, the damage parameters of which are obtained via Taylor expansion. The whole damage parameters can be found via solving the algebraic equations.

本方法从结构模态有限元算式出发，把频率和振型看作损伤参数的函数，经过泰勒展开获得频率、振型对损伤参数的一阶偏导数，然后构造以损伤参数为未知量的超定线代方程组，求解得到全部损伤参数值。

The numerical results of the dispersion relation show some nonlinear effects: for a fixed geometry of a waveguid, beam parameters and plasma density, the increment of the modulation parameter may lead to a slight increment of the operating frequency, However, as the modulation parameter increases further, saturation may occur and the dispersion relations are hard to be separated, it is due to the overmodulation of the microwave power, this phenomenon itself belongs to the nonlinear effects.

五。用严格的场匹配方法分析了填充等离子体的耦合腔链，研究了等离子体一腔模的形成以及&冷&带宽和&热&带宽的展宽效应。等离子体填周期性耦合腔(来源：Aae53d3BC论文网www.abclunwen.com)链后，形成周期性的截止频率为0的等离子体TG模式。如果填充的等离子体密度较低时，腔模和槽模的工作频率均有小幅上升，而带宽改善不明显。

The calls of non-passerine are some kinds of monotonous dull vocalizations with the characteristics of low and deep frequency, single syllable, low basic frequency and with no ability of modulation in frequency and amplitude. Most of the calls are monotonous and low quality mainly based on the basic song. Compare the vocal of sub-oscine passerine with non-passerine, they have some similar aspects, but the former possesses of stronger capability of vocal control.

非鸣禽的叫声低沉而单调，音节种类单一，基本音频率低，缺乏频率调制以及幅度调制的能力，叫声的品质因数很低，不悦耳，大多为以基本音为主的单音调低音品叫声，亚鸣禽的叫声与非鸣禽近似，但在控声能力方面又有所提高。

Localization length of the system with twoincommensurable perturbing frequencies is much larger than that of the systemwith one perturbing frequency.

数值分析表明：如果对振幅和相位调制的两个频率是不可约的，那么这个系统的局域长度要比单个频率扰动时大得多。

For high-frequency words, there was no phonologically mediated priming effect, and for low-frequency words, the phonologically mediated priming effect, although significant itself, was statistically different from the direct semantic priming effect.

实验结果发现频率较高的词的加工中没有语音中介启动效应，在频率较低的词的加工中得到了语音中介启动效应，但是这种中介启动效应与直接的语义启动效应有显著差异。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐