查询词典 difference frequency

In view of it, the algorithm based on the Fast Fourier Transform techniques with quadratic interpolation in the frequency domain is mainly presented. After that,the simulation is carried on and analyse the simulation curves deeply. It ndicates that this algorithm can not only enhance the frequency resolution, but only estimated frequency has high reliability and excellent stability. And it\'s feasible.

主要介绍一种基于FFT和在频域内二次插值的频偏估计算法，之后进行仿真、深入分析仿真曲线，结果表明该算法不仅可以提高频偏估计的精度，而且频偏估计值具有很高的可靠性和良好的稳定性，该算法是可行的。

Methods:Normal frequency ventilation of high frequency jet respirometer was used to control breath continuously for 31 cases without autonomous breath,the ventilation frequency:16～20 times/min with continuous ventilation time 12～72 hours.

结果：通气1h后PaO2（15.92±2.50）kPa，PaCO2（5.90±0.76）kPa；通气24h后PaO2（14.76±3.21）kPa，PaCO2（6.11±0.84）kPa。在Ⅱ型呼吸衰竭，常频与高频通气交替应用比单用高频通气辅助呼吸，其提高血氧分压的疗效优越（P＜0.001），且可防止高碳酸血症。

It is shown that the coupled system can synchronal response to the control frequency, although it may have no synchronal responsion frequency, or have other synchronal responsion frequency.

证明了在外力控制项作用下，交联系统能响应到给定的同步控制频率，尽管原交联系统可能没有同步响应现象，或同步响应到另一个同步频率。

Additionally newer frequency also needs to notice, the newer frequency of website oneself content actually aeriform in the creeping frequency that fostering a spider, if updating content everyday, the spider also is met the habit that nurturance climbs a station everyday, weight of as time passes rose, new content searchs engine to be able to be collected immediately.

另外更新的频率也需要注意，网站自身内容的更新频率其实无形之中就在培养蜘蛛的爬行频率，如果每天都在更新内容，蜘蛛也会养成每天爬站的习惯，久而久之权重提高了，新的内容搜索引擎马上就会收录。

It can eliminate the effect of rotor speed and sampling frequency on the distribution of wavelet analysis frequency band energy. Energy features of the frequency band gave unified physical meanings.

该方法能消除转子转速和采样频率对小波分解频带分布的影响，提取的频带能量特征具有统一的物理意义。

The frequency analysis conducted in this study further indicates that while high token frequency results in lexicalization of V-kai complex verbs, high type frequency leads to schematization of V-kai constructions.

本研究所执行的频率分析进一步指出例的频率会导致「V-开」复杂动词的词汇化，而型的频率则会引起「V-开」构式的基模化。

In common with other populations of Han nationality in North China, the present population revealed a high frequency of ⅡB (0.2135), and a slightly higher frequency of n (0.5016) than that of m (0.4984). High frequency of Le (24.17%) was observed. Among 94 individuals tested, 4 cases of Le were found to be ABH secretor secreting A or B substances but not H substance. A total of

在94人中还发现四名Le型属于ABH分泌型，且都属于分泌A或B血型物质的类型，无一例为分泌H血型物质的类型； Rh阴性率仅0.3％，CCDee和CcDE型占75％以上； P_1型占39.1％； ABH分泌型占72％，低于全国其他民族中已知的分布。

The results showed that the frequency of germination were able to be increased by keeping seed vessel, culturing seeds with radicle up and pre-treating seeds in 5.0mg/L GA3 solution for 12h. The frequency of explant-browning was reduced by adding AC 0.5mg/L to induction media and the vigor of plantlets was promoted by the AC-adding. The propagating coefficient could be improved and the frequency of bud-vitrifration increased by adding 150mg/L coconut water.

结果表明发芽时保留种皮、接种时胚根向上对蚕豆种子的萌发有着至关重要的影响，用5.0mg/L GA3溶液浸种12h有利于种子萌发；培养基中添加0.5g/L AC能有效抑制外植体的褐化，并能使植株生长健壮；培养基中添加150mg/L椰汁能提高繁殖系数，有效抑制玻璃苗的发生。

In terms of the documentation frequency of these historical data on earthquakes of 4.7 magnitude or above in the past 3000 years ( Table 5 ) the frequency was below 2 times per 10 years for most of the time before the Song Dynasty; when printing was invented in the Song Dynasty the frequency increased to 3 times per 10 years; after the invention of seismoscope in 1900 it reached 100-1000 times per 10 years.

从3000年来4.7级以上的(ji2 yi3 shang4 de0)历史地震的史料记录频度看（图5），宋朝以前的绝大部分时间都在（2次/10年）以下；宋朝出现了印刷术，记录频度增到（3次/ 10年）以上；1900年后现代地震仪问世，记录频度达到（100-1000次/10年）的高水平。

A silent communications system in which nonaural carriers, in the very low or very high audio-frequency range or in the adjacent ultrasonic frequency spectrum are amplitude- or frequency-modulated with the desired intelligence and propagated acoustically or vibrationally, for inducement into the brain, typically through the use of loudspeakers, earphones, or piezoelectric transducers.

一个沉默的联系是不承载听觉，在非常低或非常高音频范围里，或在邻近的超音速的频谱中，这是广阔的-或带有期望的智能并且传播声学的频率调节或振动，为了刺激大脑内部，典型的是通过利用扬声器，耳机，或压电式换能器。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。