连续波
- 与 连续波 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Later,calculation of vertical velocity and dispersion relation for three-ply type areperformed, as is done for the case when density is stratified continuously. For thelatter, it gives internal wave's propagation form in space.
针对密度分布的三层模式,计算了垂向速度模态与内波的色散关系;连续分层的情况,则给出了半板造波的垂向模态分布与空间传播形态。
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METHODS: Samples series of beat to beat cycles were selected to prepare Poincare mapping to describe TWA distribution.
选取连续心跳周期中T波窗口内的采样点序列做散点图,描述T波交替的分布状态。
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And the undersurface phenomenon was as well as the continuous irrigation.
波涌灌溉对土壤0~25cm温度影响较大,循环率为1/2(N1s)、1/3(N2s)和1/4(N3s)的波涌灌溉温度都较连续灌溉的高,依次高出0.1、0.7和1.1℃。
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In this dissertation, InGaAs/InGaAsP/InP MQW microdisk laser and its characterization were presented. Some conclusions are as following: the characteristics of lasing threshold was discussed by using rate equation. The dependent relations between threshold and cavity volume, spontaneous emission coupling efficiency β were investigated. The whispering gallery mode and spontaneous emission in a microdisk geometry were then studied. Almost all spontaneous emission was coupled into the lowest order TE mode when the normalized thickness of photonics well was between 0.15 and 0.5. The design principle and device process of InGaAs/InGaAsP/InP MQW microdisk laser were presented. The microdisk lasers with the diameter of 8μm, 4. 5μm and 2μm were succesfully fabricated by using etching techniques. The pulse lasing thresholds for the microdisk with the diameter of 8μm and 4. 5μm were 170μW and 15μW, a record results compared with the published in the literature. The cw lasing threshold for a 2-μm-diameter microdisk was only a few μW. We haven't found similar report up to now. To solve the problem of directional output in a microdisk laser, the power coupling efficiency in a double disk geometry was investigated with the theory of waveguide mode couple. A new structure of electrically pumped microdisk laser with output waveguide was designed, making a foundation for the practical use of microdisk laser.
本文主要研究InGaAs/InGaAsP/InP多量子阱半导体碟型激光器的研制和特性表征,并取得如下结果:利用速率方程理论讨论了激光器激射阈值的特性,分析了阈值与腔体积和自发发射耦合系数β之间的关系;讨论了微碟光子阱结构中的自发发射特性和微碟中WGM模式特性;光子阱结构在其归一化厚度在0.15-0.5之间时,几乎全部自发发射进入到最低阶TE模式中;研究了InGaAs/InGaAsP/InP多量子阱微碟激光器的结构设计原理和器件的制备工艺;利用刻蚀方法成功制备出直径分别为8μm、4.5μm、2μm的碟型微腔激光器;直径8μm和4.5μm的微碟脉冲光泵浦激射阈值分别为170μW、15μW,是目前所见文献报导中比较低的;直径2μm的微碟连续光泵浦激射阈值仅几μW,目前尚未见到达到类似结果的研究报导;为解决微碟激光器激射光定向引出的问题,通过波导耦合模理论分析了双层碟之间功率耦合效率;据此设计了新型带耦合输出波导的电泵浦微腔激光器,为进一步研制可实用的电泵浦微腔激光器打下基础。
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Qingdao is the only one for four consecutive years through the state seized the food business, and the city of Qingdao in the same industry in the first IS9002 through the international quality system certification, the company has been in strict accordance with international Passage of the HACCP standard production and processing, the company Boni Ya its meat suppliers of raw materials, first-class health conditions, the unique flavor of the product, the level of international modern processing equipment, high-quality product quality, rich in nutritional value and improve after-sales services , The well-known Castle, the crown of Shandong, the Chinese reputation.
波尼亚食品有限公司是青岛是唯一一家连续四年通过国家统检的食品企业,并在青岛市同行业中率先通过IS9002国际质量体系认证,目前公司已严格按照国际通行的HACCP标准进行生产加工,波尼亚公司以其放心肉原料供应,一流的卫生条件,独特的产品风味,国际现代化水平的加工设备,优质的产品质量,丰富的营养价值,完善的售后服务,驰名岛城,名冠山东,享誉华夏。
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The reestablish and error estimation formulas of the non-noise signal under the finitive scale condition is given for the basic filtering operation of high pass, low pass, and band pass respectively. The signal Wavelet analysis softwave developed, which is of some common use, and is served as the basis of the research following it, is also introduced here.
第二章首先建立了突变信号的数学模型;导出了对突变信号进行连续小波分析的尺度截取准则;分别针对突变信号进行高通、低通和带通三种基本滤波操作的情况,给出了在有限尺度分析情况下的非噪部分信号的重建估计和误差估计公式;并介绍了所开发的作为后续工作的基本分析工具、具有一定通用性的信号小波分析软件。
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Nonlinear wave equation; nonlinear intensity; solitary wave solution; nonlinear differential-difference system; compacton; peakon; noncontinuous solitary solution; bifurcation
非线性波动方程;非线性强度;奇异孤立波;非线性微分—差分系统;紧孤立了;尖峰孤立子;不连续孤立波;分岔
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Synaptic inputs activated repetitively within 20 ms before spiking of the tectal neuron become potentiated, whereas subthreshold inputs activated within 20 ms after spiking become depressed.
在四叠体突触尖波20ms前连续被激发的突触输入将造成突触电位化,然而在尖波产生的20ms后的小于临界输入将造成突触抑制。
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Synaptic inputs activated repetitively within 20 ms before spiking of the tectal neuron become potentiated, whereas subthreshold inputs activated within 20 ms after spiking become depressed.
在四叠体突触尖波20ms前连续被激发的突触输入将造成突触电位化,然而在尖波产生的20ms后的小於临界输入将造成突触抑制。
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Daubechies'wavelet frame theorem is extended from one dimension to n dimensions. According to this framework, an example of n-dimensional radial wavelet is given. Differing from tensor product multidimensional wavelet, the radial wavelet is inseparable, locally supported and infinitely differentiable. The family, obtained by dilations and translations from this radial wavelet, constitutes a special type of radial wavelet frame in L〓.
Daubechies的框架定理推广到了n维情形,同时,也按照这一理论框架,给出了高维二进径向小波的具体例子,具有下列性质:ψ是无穷次连续可微的;ψ是局部支撑的,支集为‖x‖≤1;ψ含有分式因子,因此对&奇异点&更为敏感;ψ是不可分的,不同于张量积形式的高维小波;ψ是各向同性的。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力