查询词典 difference frequency

The spectrum analysis of periodic signals has some difference with the spectrum analysis of nonperiodic signals.The DFT result of nonperiodic signals indicates the spectrum density on frequency Ω,and is continuous.

一般信号的DFT结果表示该信号在频率Ω处的频谱密度，它是一个连续信号，周期信号的DFT仅表示它的基波及各次谐波的幅值，是一个离散信号。

Unified explanation of the effects due to Talbot and Montgomery effect is presented in optical path difference between diffraction spatial frequency spectrums.

从成像过程中各衍射频谱分量的光程差，给出了Talbot效应和Montgomery效应的统一解释。

The main difference between ours and LTF-MES is that we consider the execution order of tasks that may reduce the frequency of memory contentions.

而我们提出的演算法和最大工作量任务优先之演算法最大的不同在於，我们考虑任务的执行顺序，可因此减少核心之间相互竞争记忆体的频率。

For the first time, this study conducted a series of field sampling in multiple locations over several years and demonstrated that the B and Q biotypes first invade areas with high frequency of transport through human movement of plant materials, and then rapidly spread into surrounding areas and displace indigenous genotypes, and in parallel with displacement significant changes in sex ratio occurred in the mixed populations. Crossing experiments demonstrated that in the B. tabaci species complex there are many genetic groups that are completely or nearly completely isolated in reproduction. Apart from behavioural mechanisms, difference in host plant suitability and insecticide susceptibility between whitefly biotypes may also play important roles in the displacement of indigenous whiteflies by alien whiteflies in Zhejiang.

本研究首次以一个地理区域内广泛系统的野外调查数据证实，B型和Q型烟粉虱首先通过花卉苗木调运入侵交通较为发达的地区，然后迅速向周边扩张并取代土著烟粉虱，同时入侵取代过程伴随着混合种群中性比的变化；杂交试验证明烟粉虱复合种内存在多个生殖上隔离或基本隔离的遗传群；B型烟粉虱在浙江省内迅速取代土著烟粉虱，除行为机制外，生物型之间寄主适应性和药剂敏感性等方面的差异也可能在此过程中起着重要作用。

The partial difference of in actual life of male and female applies to Internet as much, for example, woman in actual life often is regarded to take care of domestic part, on Internet, they click the frequency of Medical Protection website to also want to exceed the male.

男女在现实生活中的部分差异也同样适用于互联网，例如，女性在现实生活中常被看作照顾家庭的角色，在互联网上，她们点击医疗保健网站的频率也要超过男性。

This paper gives a new method for measuring phase difference between two sinusoids with the high range of frequency.

本文提出一种高频范围内两正弦信号的相位之间相位角的方法。

As a result, the realization of frequency and phase difference measuring has proved the system is of practical significance and effective.

目前这套系统在实验研究阶段已经实现了计数器算法的测频测相技术，表明了系统设计的有效性和实用性。

In the real work, it is often need to measure the phase difference between two signals with the same frequency, solve all sorts of problems appearing in practice.

在实际工作中，常常需要测量两列频率相同的信号之间的相位差，来解决实践中出现的种种问题。

The frequency of plantlet regeneration has difference, too.

总之，不同基因型的水稻，其盾片愈伤组织的诱导与绿苗再生需要采用不同的培养基，才能获得理想的结果。

Whether exists difference of feeling level between different grade, gender and frequency of watching CTA.Fourth, average level of childrens behavior propensity after watching CTA between different grade, gender and pocket-money per week.

儿童常常混淆品牌名称与企业名称，在他们脑海中，他们把自己熟悉喜欢的品牌产品当作是那个叫"品牌"的企业生产的。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。