In contrast, PBT gave only one stage of degradation as a first order reaction.

Objective To discuss the new method in contrast echocardiography of right heart.

目的探讨右心声学造影新方法。

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It is shown that, for the QW with wider well width, the electrons and holes are highly localized near the edges of the well due to the build in internal electric field.

结果表明，对于阱宽较大情形，电子和空穴高度局域在QW边沿附近。

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Based on the above problems, the paper analyses the code and basically clears about the program structure, data structure and implement method of keyboard input process of QW/ GB code Microsoft Corp.

本文针对上述问题对源代码进行分析，基本弄清楚了微软公司的区位码／国标码的汉字键盘输入法的程序结构、数据结构及程序实现方法。

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Slow and fast light in quantum-well ( QW) and quantum-dot ( QD) semiconductor optical amplifiers ( SOAs) using nonlinear quantum optical effects are presented.

利用非线性量子光学效应在量子阱（QW）、量子点（QD）半导体光放大器（SOA）中得到了慢光和快光。

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The main contents and conclusions are as follows: 1. The interband spectra in a QW driven by a THz field are investigated within the theory of density matrix.

用密度矩阵理论研究了太赫兹场作用下量子阱的光吸收谱。

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A simple equivalent circuit model of quantum well laser ( QW LD) which is derived by QW rate equations and is accomplished in the circuit simulation program SPICE.

给出一个新的量子阱激光器等效电路模型，由量子阱激光器单模速率方程推导得到并在电路模拟程序SPICE中完成。

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With the prediction for the small signal response and the transient large signal response of QW LD, the computer simulation results agree well with the direct numerical analysis of the rate equations.

并利用该模型对单量子阱激光器的小信号特性和瞬态大信号特性进行了预测，模拟结果表明和速率方程的直接求解结果吻合很好。

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We discuss recent theoretical research on QW resonances in Fe ( 001)/ MgO/ Fe/ MgO/ Fe double barrier magnetic tunnel junctions.

文章介绍了最近在Fe（001）/MgO/Fe/MgO/Fe双势垒磁性隧道结中存在的量子阱共振隧穿效应的理论研究工作。

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QW series submersible sewage pump is mainly used in municipal engineering, and industry and agriculture, hospitals, building, hotel, restaurant, etc.

QW系列潜水排污泵主要用于市政工程、工农业、医院、建筑、宾馆、饭店等行业。

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Via variant of displacement harmonic oscillation, the exact electronic states in the semi-parabolic QW with an applied electric field are obtained.

通过位移谐振子变换，得到了系统中的电子态的精确解。

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A useful numerical simulation method for theoretical discussion as well as for practical application about photonic QW structure of photonic crystals with different lattice constants is proposed.

最后给出一种基于平面波的传输矩阵法，且对于不同晶格常数的光子晶体量子阱结构均有效的数值模拟方法，可用于研究由三维光子晶体材料或者色散材料组成的光子晶体量子阱结构。

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To enhance the tunable photonic delay of a single QW SOA, we explore a serial cascade of multiple amplifiers.

为了提高单个量子阱半导体光放大器的可调光子延迟，我们进一步探讨了多个光放大器的串行级联。

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Analyzing and studying the source code of QW code/ GB code can greatly contribute in studying and programming input methods of other languages.

分析和研究中文键盘输入法的区位码／国标码源代码，可以推广到其他语言输入法的研究和编写。

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Material growth and device fabrication of the first 1.3 μ m quantum well ( QW) edge emitting laser diodes in China are reported.

报道了中国第一只1.30μm单量子阱边发射激光器的材料生长、器件制备及特性测试。

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On the base of that, we use the PSpice simulation software to imitate the various characteristic of the QW& LD.

Gao模型和GRossi模型，在此基础上，利用PSpice这个电路仿真软件，对量子阱激光器的多种特性进行了模拟。

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A model for the number of QW SOAs in series with variable optical attenuation is developed and matched to the experimental data.

提出了具有可变光衰减的串联量子阱半导体光放大器的数字模型并与实验数据相匹配。

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Study on photoluminescence spectra of gaas/ algaas single QW intermixed by GA ion implantation

注入Ga离子的GaAs／AlGaAs量子阱中界面混合的光荧光研究

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Research advances in GaN-based QW devices

GaN系量子阱器件的研究进展

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With increasing the QW width, excitonic peaks shift to low-energy.

增加量子阱宽度，激子峰降低并向低能端漂移。

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We demonstrate the scaling law and the bandwidth control by using the serial cascade of multiple QW SOAs.

利用多个量子阱半导体光放大器的串行级联验证了缩放比例原则和带宽控制。

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