查询词典 wavelength

The measurement shows that 310.8 nm is the suitable wavelength for detection of trichloroethylene and 322.5 nm is the suitable wavelength for detection of tetrachloroethylene in this wavelength range.

研究表明，该波长范围内三氯乙烯的最佳检测波长为310.8 nm，四氯乙烯的最佳检测波长为322.5 nm。

The results are as follows:(1) The relative spectrum sensitivity of the two kinds of compound eyes were similar, both were most sensitive to wavelength of 562nm, and also sensitive to wavelength of 400nm、483nm;(2) The absolute sensitivity curves to these three kinds of sensitive light of the two kinds of compound eyes were similar, all increase with the increment of luminance strength, but the compound eyes of corn borer had stronger response to wavelength of 562nm and 483nm;(3) The two kinds of compound eyes showed similar absolute sensitivity curves to white light, however, showed different sensitivity to light at different time or under different adaptative state.

结果如下：（1）二者具有相似的光谱反应曲线，均对562nm的光最敏感，另外对400nm、483nm光也较敏感；（2）二者对这三种敏感光的光强度曲线近似，在一定范围内均近似线性递增，但玉米螟复眼ERG在562nm和483nm下具有更高的反应幅度；（3）二者对白光的光强度曲线也近似，但随复眼适应状态及测试时间的不同，表现出不同的光敏感性。

It is found from experiment that when pumped by skew light along the fibre's axis, both transverse electric wave and transverse magnetic wave exist in WGM lasing emission simultaneitly. With the increase of refractive index of cladding dye solution, the wavelength spacing between TE and TM waves of which the radial mode number and angular mode number are the same value decreases, and the central lasing wavelength of WGM bluely shifts to short wavelength direction.

实验发现，在抽运光以偏斜光线方式沿光纤的近轴向抽运时，回音壁模式的光纤激光辐射中，既存在光电矢量和光纤径向垂直的横电波，也存在光电矢量和光纤径向平行的横磁波；随增益包层染料溶液折射率的增加，径向模式数和角模式数相同的TE波和TM波之间的波长差单调减小，回音壁模式激光辐射的中心波长向短波方向移动，辐射的波长范围变窄。

In this dissertation, we consider following problems: priority-based wavelength assignment algorithm in restorable WDM transport networks, design of resilient WDM mesh networks, design protection for WDM networks without and with considering wavelength continuity constraint, efficient placement of wavelength converters.WDM Network will play important role in future backbone networks.

本文主要研究和WDM光传送网生存性有关的问题，主要集中在以下几个方面：抗毁WDM网络中的基于优先级的波长分配算法，网状WDM网络的抗毁设计，不考虑波长连续性限制时WDM网络的保护设计，以及考虑波长连续性限制时WDM网络的保护设计和波长转换器的合理放置。

Analytical formulae are presented for the first time to describe the shift in the resonance wavelength of LPG in response to etching of the fiber cladding or a change in the external refractive index. The accuracy of the formula is confirmed by comparision with numerical simulations and experimental results. We demonstrated that the resonance wavelengths of an etched LPG are more sensitive refractive index than those of an unetched grating. The bending properties of long period fiber grating written in different type fiber are studied experimentally. The transmission peaks and the central wavelength of LPG change with the bending of the fiber. A new peak appears at the shorter wavelength when the fiber is being bent. The changes of the peaks are different for different photosensitive fiber. Those properties have broad application foreground in fiber sensors and tunable filters.

分别从理论和实验上对长周期光栅的折射率特性以及光纤包层半径对长周期光栅特性的影响进行了研究，首次给出了描述光纤包层半径腐蚀和外界折射率改变与长周期光栅共振波长关系的理论表达式，实验与理论和数据模拟的结果很好符合，利用腐蚀光纤包层的方法可以有效地提高LPG的折射率灵敏度；对不同光纤中写入的长周期光栅的弯曲特性进行了实验研究，LPG的透射峰形状及其中心波长随光纤弯曲而发生变化，并且随着弯曲将在短波方向出现新的透射峰，其透射峰的变化规律因所用光敏光纤的不同而不同，这一特性在光纤传感和可调谐滤波器方面有重要的应用前景。

The function of 3dB fiber loop mirror in fine wavelength partition is studied. With this theory, a novel narrow linear band, dual-wavelength switchable Er-doped fiber laser is realized.2. An unpumped Er-doped fiber and broadband fiber Bragg grating with high reflectivity is served as an auto-tracking filter, where the space hole-burning effect appears when the laser signal travels and forms standing wave, thus the generation of multi-longitudinal-mode is suppressed. Then the high birefringence fiber loop mirror is introduced to act as comb-liked wavelength filter.

主要包括：1、发现3dB光纤环镜的精细波长分割作用，并利用这种分割机制，研制成功一种窄线宽、双波长可转换的掺铒光纤激光器。2、利用未受泵浦的掺铒光纤以及宽带高反射率的光纤布喇格光栅做自动跟踪滤波器，当穿行其中的激光信号构成驻波时，出现了空间烧孔效应，从而抑制了多纵模的产生，引入高双折射光纤环镜做梳状波长滤波器。

In order to acquire the largest extinction ratio of the converted signal in the cross gain modulation wavelength conversion, the signal wavelength λ pk,s should be longer than the small signal gain peak wavelength of the semiconductor optical amplifier.

增益调制型波长转换中，为得到转换后信号最大的消光比，信号光波长应该比半导体光放大器的小信号增益峰值波长长。

Especially, more attention is paid to the blocking performance of the router with limited wavelength convertible capability. And it is seen by the numerical computing that low conversion degree of the wavelength converter is more realistic to construct a wavelength router system with accurately tunable devices not used, not only switching time is to be minished, but also the complexity of carrying out in engineering is reduced.

尤其在受限波长转换条件下的配置优化分析，可看出波长路由器无需可调谐器件，也能获得灵活的波长转换能力，不但可避免波长路由器因为精确调谐所开销的时间，而且所有的控制均为简单的开关控制，可降低工程实现的复杂度。

Through visible wavelength and the UV spectrum analysis, the transmittance is found declined as the mass transport and the cosolvent concentration increases and the cut-off wavelength tends to shift to long wavelength.The FTIR spectrum analysis shows that tin dioxide particulates and PMMA has no obvious surface bonding. Therefore, no new absorption peak is found and so do the change shown on the wave shape.

经由可见光及紫外光穿透光谱分析，发现其穿透率随质传温度及氯化锡/甲醇潜溶剂浓度增加而下降，且截止波长有往长波长移动的现象；经红外光光谱分析，析出的二氧化锡颗粒与PMMA并没有明显的界面键结，故并无新的吸收峰出现，波形改变不明显。

Retinotopy; color sensitivity; color-selective region; lateral geniculate nucleus; visual cortex; area V8; area V1; cones; visual pigments; fovea centralis; macula lutea; red; green; blue; Young-Helmholtz theory; short-wavelength-sensitive cones; medium-wavelength-sensitive cones; long-wavelength-sensitive cones; S cones; M cones; L cones; visual perception; ectostriatum; tectofugal visual pathways; thalamofugal visual pathways; color-reversal learning; visual Wulst

retinotopy；感色灵敏度；颜色-选择区；侧膝体核；直观皮层；区域V8；区域V1；圆锥细胞；视色素中央凹；黄斑；红色；绿色；蓝色；三原色学说；短波长敏感圆锥细胞；中波长敏感圆锥细胞；长波长敏感圆锥细胞；S圆锥细胞；M圆锥细胞；L圆锥细胞；视觉；ectostriatum；tectofugal视路；thalamofugal视路；颜色-倒序学习；visual Wulst

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？