模数

The parameters include waveguide width: 8μm, titanium film thickness:50~60nm, index change: 0.006, diffusion temperature: 1050 and diffusion time: 9~10 hours.Designed and produced a 2 X 2 coupler Optical switch and a 1 X 2 digital optical switch. The coupler optical switch was produced by AP reversal structure, with the main parameters such as total length of switch: 30mm, waveguides center distance: Hum, interaction length: 17mm, and at 17V with a crosstalk of -18dB. The digital optical switch was produced by asymmetry electrode Y branch structure. The main parameters of this switch such as switch length: 25mm, the angle of Y branch: 0=0.1? center distance at branch end: 30μm, the center distance of electrons: 12μm, and at 27V with a crosstalk of 18dB.

设计并制作了2×2耦合型光开关和1×2数字开关，其中耦合型开关主要采用的反转Δβ定向耦合器开关，开关长度约30mm，波导宽度8μm，波导间距14μm，耦合区长度17mm，电极主要采用三电极结构，最终测得对TE模开关电压＜-15，消光比≈18dB；数字开关采用非对称电极Y分叉数子开关结构，利用BPM软件模拟了其开关特性并优化了器件参数，制作中采用的主要参数为：开关长度约25mm，Y分叉角θ=0.1°，Y分叉末端波导间距30μm，电极间距12μm，最终测得开关电压27V，消光比≈18dB。

The main purpose of this study is to detect the multiple cracks of an aluminum plate with stiffeners by wavelet transforms.

本研究主要是利用小波包节点范数来制作带有加强材之铝合金平板的第一模态振型值，并且利用二维离散小波分析来侦测裂缝之所在位置。

A mathematical model for the relationship between the softening point and composition is established by analyzing the composition of the ISP sinters, which has considerably facilitated the observation of the sinters' metallurgical properties, and provided a basis for controlling the operation parameters of ISF.

通过对烧结块的成分分析，建立软化点与成分的数模关系，直观了解烧结块冶金性能的变化，为密闭鼓风炉技术参数的控制提供重要的生产依据。

An optimized method is presented to design the down scalers in a GHz frequency synthesizer.

介绍了一种应用于GHz级高速频率合成器的数模混合下变频模块。

Combined with dumm y damping parallel circuit,the voltage prediction can eliminate partially the sam pling tim e delay of input and output data transfer thus resulting in current noise reduction and a numerical stability im provement,which can achieve an overall simulation stability in steady and transi...

利用电压预测技术，结合&虚&阻尼并联支路，可以有效地减小接口电流噪声，提高 RTDS数值计算稳定性，保证数模接口在稳态和暂态仿真中的稳定。各 AC/DC接口的电压预测步长需独立精心选择，典型值在 1个～ 3个步长，取决于直流平波电抗值的大小和直流输电线的长度。文中给出了接口的技术实现和性能校验结果。

Combined with dumm y damping parallel circuit,the voltage prediction can eliminate partially the sam pling tim e delay of input and output data transfer thus resulting in current noise reduction and a numerical stability im provement,which can achieve an overall simulation stability in steady and transient states .

利用电压预测技术，结合&虚&阻尼并联支路，可以有效地减小接口电流噪声，提高 RTDS数值计算稳定性，保证数模接口在稳态和暂态仿真中的稳定。

First, according to the tracking error dynamics and kinematics described by unit quaternion error and angular velocity error, a sliding mode controller is derived based on Lyapunov theory.

首先根据由误差四元数和误差角速度描述的跟踪误差动力学和运动学方程，设计了基于李亚普诺夫方法的滑模变结构控制律。

The beam widt h of t his equivalent basic mode is measured by including 98 % of t he beam energy , and t his is an effective way to calculate t he beam quality parameter.

对于工业用大功率固体激光器，输出激光功率较大，达数千瓦；为满足加工过程对不同功率的需要，输出功率有较大的范围，从额定功率到额定功率的 10 %；输出激光的模式为多模，光束质量随着输出功率的增加而变化。

Before concrete vibration starts, plan well number of sets of sample blocks to be retained and check whether on-site form testing is enough.

混凝土振捣前做好试块留置组数计划，并检查现场试模是否够。

For example, size problem to offsctdruckereien point of view, the greater the number of celebrity…, the better, because the same set of products can be more, and flexography is not, efficiency depends on the machine speed, in parts of the appropriate size, size 小意 to use low-cost, small size, from roll to die-drum is plate, tape, seihan fees naturally had; size also means that the cumulative operation error gets smaller, quality control is easy.

譬如尺寸问题，以胶印的观点则是开数越大越好，因为同样印数下可以多出产品，而柔版则不然，效率是靠机速实现的，在活件允许的情况下，尺寸适当即可，尺寸小意着使用成本低，试想，尺寸小则从版辊到模切滚筒都小，版材、胶带、制版费自然也就都省了；尺寸小还意味着操作过程中的累计误差变小，质量控制也就容易了。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

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。