查询词典 spectrum

A magnetic analyzer was designed to measure the energy spectrum of the pulsed intense electron beam of a linear induction accelerator.

为了测量一台直线感应加速器输出的强流脉冲电子束的能谱宽度，开展了磁分析器的设计研究工作。

A novel anionic gemini surfactant,didodecyl-ethoxylate bis-sodium sulfate was prepared in three steps using lauryl alcohol,glycol-epiglyceride and chlorosulfonic acid as raw materials and BF_3-ethyl ether as catalyst.The chemical structure of the product was confirmed by IR spectrum.

以十二醇、乙二醇二环氧甘油醚和氯磺酸为原料，以BF3-乙醚为催化剂，通过三步法制备阴离子型双子表面活性剂双十二烷基乙氧基二硫酸酯钠；红外光谱对其结构进行了表征，测定了其表面活性和发泡力等性能。

Since SystemView only plots the spectrum from zero to fs/2, the first spectral translate of the 16-times oversampled signal centered at 705.6 kHz is not visible.

自SystemView的唯一图谋频谱从零至FS / 2 ，第一次谱翻译 16倍过采样信号集中在705.6千赫不可见。

The fragments, preserved between sheets of glass, respond to the infra-red spectrum - ink invisible to the naked eye can be seen and photographed.

红外线谱把这些保存在玻璃板之间的残片上肉眼无法识别的墨迹显现出来，并拍成照片。

This article begins with a brief account of the end of phenomenological sociology after the sixties in the last century, which is followed by a detailed account of a spectrum of theoretical constructions offered by phenomenologists and sociologists in the last century.

本文先简述现象学社会学于上世纪60年代之后的终结，又详细描述了一个由现象学家们和社会学家们在过往百年里所构想的众多理论建构形成的光谱。

The effects of ion doping to light emitting spectrum of phosphors is studied.

3研究离子掺杂对荧光粉发射光谱的影响。

The model considers as many factors as possible, including nonuniform distribution of photon intensity and carrier density along active region, gain spectral dispersion, spontaneous emission spectrum and facet reflectivity, and is applicable under the condition that the pulse width of injecting signal is wider than 10 picoseconds. It provides a convenient and effective theoretical platform for SOA dynamic characteristic study.

该模型考虑光子密度和载流子浓度沿有源区的非均匀分布、增益谱色散性、自发辐射噪声谱和端面反射率，适用于脉冲宽度高于10ps的信号输入的情况，为后续研究SOA动态特性提供了方便而有效的理论验证平台。

There were some difference in spectrum of IR,UV-Vis and DRS between the composite materials and polycarbonate.

纳米复合材料的红外，紫外－可见吸收光谱和DRS测试表明复合材料具有与基体材料不一样的光谱特征。

The diode laser at 657 nm has the characteristics of lower cost and higher power than that at 633 nm. Therefore, we use the 657 nm ECDL to investigate the saturation spectrum of the hyperfine structure components of P(84) 5-5 transition of 127I2 at 657.483 nm for frequency stabilization of our ECDL laser.

nm 波段的二极体雷射比起633 nm 波段的二极体雷射拥有较低的费用和较高的功率，因此，我们使用657 nm 波段的外腔二极体雷射来研究657.483 nm 波段之碘分子跃迁P(84 5-5 transition of 127I2，并将我们的外腔二极体雷射稳频在此跃迁的超精细结构成分上。

In a recent presentation, the regulator's technical advisors compared "dire predictions" about the scarcity of spectrum to Thomas Malthus's grim prognostications in 1798 about the scarcity of food.

但是最近电信管理部门的一名技术顾问在一次讲话中把这些&可怕的预测&同1798年Thomas Malthus作出的严重粮食短缺的预测作了个比较。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。