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graded
相关语句
  渐变
    Wave-scanning inverse WKB method for the refractive index profile determination of monomode planar optical waveguide with graded index refraction
    变波长逆WKB方法确定单模渐变平面光波导的折射率轮廓
短句来源
    GRADED A1-N/A1 SOLAR SELECTIVE ABSORBING SURFACE
    渐变Al-N/Al太阳选择性吸收表面
短句来源
    Study of the Donor Property in Superlattice Structure of Graded Changing Energy Gap
    渐变能隙超晶格结构中的施主杂质性质的研究
短句来源
    An Accurate Analysis of Graded Index Optical Waveguides
    渐变折射率光波导的精确分析
短句来源
    Propagation Characteristics of Metal-Clad Graded Index Planar Optical Waveguides
    金属包层渐变折射率平板波导传播特性
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  “graded”译为未确定词的双语例句
    A method to determine refractive index profiles for graded optical waveguides
    确定渐变型光波导折射率轮廓的一种方法
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    The Research of Steady State Characteristics of Graded Index Externally Coupled Cavity Semiconductor Lasers
    自聚焦棒外腔半导体激光器稳态特性的研究
短句来源
    A Kind of Phased Array Lasers Made of GsAs/GaAlAs Graded Index Separate Confinement Single Quantum Well Heterostructures
    一种GaAs/GaAlAs分别限制单量子阱锁相列阵激光器
短句来源
    Combined liquid waveguide method: determination of refractive index profile of a monomode graded planar optical waveguide
    液体复合波导法确定单模渐变型平面光波导的折射率轮廓
短句来源
    The Experimental Study of Beat with 1.3μm Graded Index Rod External Cavity Semiconductor Lasers
    1.3μm自聚焦棒外腔半导体激光器光混频的实验研究
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  graded
Structure of some ?-graded lie superalgebras of vector fields
      
In this paper we classify?-graded transitive Lie superalgebras with prescribed nonpositive parts listed in [K2].
      
We also study the structure of the exceptional?-graded transitive Lie superalgebras and give their geometric realization.
      
In the first paper we determined the graded algebra A(Γ2[3]) of Siegel modular
      
The graded $\mathbb{F}_p$-algebra A(V) turns out to be normal and Cohen--Macaulay, there is an analogue of Steenrod powers and also a "Karagueuzian and Symonds-type" finiteness theorem for its invariant theory, etc.
      
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Let a sluggish load of capacity Co be driven by a source of internal resistance Ro via an intermediate two-terminal pair. And let F12 denote the voltoge transmission fun-ction. The integral is indicated to have an interpretation as anindex of grade of performance of the transmission system matter not in frequency domain or in time domain senses. The author obtained through time domain artifice the power gain integral theorem formulated thus:Where W(∞) stands for the total stored energy in the complete...

Let a sluggish load of capacity Co be driven by a source of internal resistance Ro via an intermediate two-terminal pair. And let F12 denote the voltoge transmission fun-ction. The integral is indicated to have an interpretation as anindex of grade of performance of the transmission system matter not in frequency domain or in time domain senses. The author obtained through time domain artifice the power gain integral theorem formulated thus:Where W(∞) stands for the total stored energy in the complete system at t=∞ after being kicked across Co by a unit impulse current introduced at t = 0,and Ri for the ith resistance in the inserted network with impulse response current ii (t) flowing in it.The integral will assume its maximum value when the intermediate network is all reactive and satisfying certain guite weak limitations such that W(∞) = 0. Hence it is concluded that transmission models under said limitations will behave with performance of transmission invariant of circuit structure and parameters of the intermediate network. It is also concluded that confining the pass band of F12 in narrow interval may result in greater than unity gain with the system being inert.The paper also points out that the usual desposition of loading transmission circuit in resistive termination for"matching" considerations should receive a con when the circuit is to work for wide band purposes; for example, delay lines never should be loaded with resistance(as the situation may tolerate) aside from unavoidable stray capacitance.

宽带讯号传输系统的模型可以归结为如下形式:讯号源经由内阻R_0通过介入电路驱动电容(惯性量)C_0。电压增益函数记为F_(12)。应用能量守恒律,并引用对偶互易定理及Parseval定理,作者得到功率增益的频率域积分(定理): integral from -∞ to ∞ (|F_(12)(jω)|~2dω/2π)=1/R_0[1/2C_0-W(∞)-sum from i (R_i) integral from 0 to ∞ (i_i~2(t)dt)]其中W(∞)为这一系统在C_0二端受单元脉冲电流冲击后在t=∞时的贮能,R_i为介入电路中第i个电阻阻值(其中流动的单元脉冲响应电流为i_i(t)))。文章指出integral from -∞ to ∞ (|F_2(jω)|~2dω/2π代表着系统的频域和时域传输品质。 如果介入电路为抗性电路,且满足一定条件使W(∞)得为0,则积分取极大值1/2C_0R_0。由此可见在一定条件下系统的传输品质是守恒的,它不随介入电路的结构形式(在前述条件下)及元件参量而改变。因而,如果使F_(12)的通带集中在一定窄的区域,可以取得无源增益。 由于沿袭有线通讯系统的习惯,往往讯号...

宽带讯号传输系统的模型可以归结为如下形式:讯号源经由内阻R_0通过介入电路驱动电容(惯性量)C_0。电压增益函数记为F_(12)。应用能量守恒律,并引用对偶互易定理及Parseval定理,作者得到功率增益的频率域积分(定理): integral from -∞ to ∞ (|F_(12)(jω)|~2dω/2π)=1/R_0[1/2C_0-W(∞)-sum from i (R_i) integral from 0 to ∞ (i_i~2(t)dt)]其中W(∞)为这一系统在C_0二端受单元脉冲电流冲击后在t=∞时的贮能,R_i为介入电路中第i个电阻阻值(其中流动的单元脉冲响应电流为i_i(t)))。文章指出integral from -∞ to ∞ (|F_2(jω)|~2dω/2π代表着系统的频域和时域传输品质。 如果介入电路为抗性电路,且满足一定条件使W(∞)得为0,则积分取极大值1/2C_0R_0。由此可见在一定条件下系统的传输品质是守恒的,它不随介入电路的结构形式(在前述条件下)及元件参量而改变。因而,如果使F_(12)的通带集中在一定窄的区域,可以取得无源增益。 由于沿袭有线通讯系统的习惯,往往讯号传输系统被终端于一定电阻。根据所得的定理,对于宽带系统,应该使终端免于阻性负载,才能使品质最良好。

This paper descrlbes the experimental investigation of stimulated Raman scattering obtained from a multimode fiber.10 orders of stimulated Stokes scattering of wavelengths ranging in 546~702 nm have been obtained from a 480m,multimode,low-loss,graded quartz fiber pumped by a 532 nm frequency-doubled YAG:Nd laser beam with a pulse duration of 7 ns,output power of 0.7MW and repetetion rates of 5 and 10 PPS.

本文报导了用多模光纤获得受激喇曼散射的实验研究。用480米长、多模、低损耗的梯度型石英光纤,用重复率为5次/秒和10次/秒、脉宽7毫微秒、功率0.7兆瓦的 YAG:Nd 倍频532毫微米的激光泵浦,获得了从546~702毫微米的十级斯托克斯受激散射。

A method of optimization using statistical tests has been used to investigate the refractive index profiles for graded optical waveguides. A rational merit function and a practical computation procedure have been developed. Calculation was done to determine the index profiles of Ti in-diffused LiNbO3 waveguides produced in our laboratory. Comparisons with the methods reported so far reveal some advantage of our method.

将统计试验最优化方法用于研究渐变型光波导折射率轮廓,构造了合理的评价函数,并编制了实用的计算程序。对实验室中制备的扩钛铌酸锂波导折射率轮廓进行了计算。本文提出的方法与已报导的渚方法相比较,有其明显的优点。

 
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