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According to the requirements for alternating current sampling, four feasible schemes (full-wave rectification, double 4051, raised analog ground and adder technique) are systematically contrasted in this dissertation. The hardware and software of this instrument are also analyzed in great detail.

本文围绕交流直接采样的技术要求，详细地对比分析了四种可行性设计方案，其中包括全波整流、双4051、模拟地抬高及加法器方式，并对其硬件实现和软件编程进行了详细的分析与论证。

Switching Power Supply with the traditional distinction between :(1) not only the output voltage feedback, feedback from the average input current;(2) Current benchmarks signal voltage error signal and full-wave rectifier voltage signal sampling the product.

与传统开关电源的区别是：不仅反馈输出电压，还反馈输入平均电流；(2)电流环基准信号为电压环误差信号与全波整流电压取样信号之乘积。

A new physiological race of leaf mould Fulvia fulva ( Cooke Ciferri 1.2.3.4.9 was detected by continuous investigating and sampling from tomato production in Beijing area for several years.

通过对北京地区番茄叶霉病菌生理小种分化的连续监测，发现了可侵染目前生产上主栽抗叶霉病品种的新小种。

By analyzing the shortcoming of existing robust algorithms based on random sampling employed in estimating the fundamental matrix, a novel algorithm is proposed for optimal estimation of fundamental matrix.

分析了基于随机抽样检验思想的现有鲁棒算法在基本矩阵的求解问题中存在的不足，提出一种获得基本矩阵最优解的算法。

It is aimed at the system in which the sampling frequency cannot be locked on the fundamental frequency.

该文提出一种基于神经网络的高精度电力系统频率谐波分析算法。

Detailed sampling was made from the Zongshan section in Gamba, southern Tibet. These samples yield increasingly diversified foraminifers, totalling 130 species assigned to 52 genera.

西藏南部岗巴地区Cenomanian Turonian界线附近发生过一次与大洋缺氧事件有关的集群灭绝事件。

We consider this problem in a game theoretic framework and introduce sampling schemes that are optimal in this game theoretic setting by the Minimax theorem and the max-flow min-cut theorem.

本文引入博弈模型框架上的原始入侵数据包采样策略，在此基础上再进行分析和扩展。

Ease yourself into new gastronomic experiences by sampling some of the standard dishes of your country.

缓解自己到新的烹饪经验的采样一些标准菜贵国。

Using high resolution image sampling system to re cognize interference fringes is the premise of improving the measurement accurac y of gauge block length.

利用高分辨率的图像采集系统读取干涉条纹，是提高量块长度测量准确度的前提条件。

These genera should be treated as part of Gaultheria; however, an infrageneric system of the genus may not be well established without sampling the Asian members of the genus.

一些种是高山、亚高山山坡或树线以上植物群落的重要组成成分，在世界植被组成中占有一定的位置(徐廷志，1991)。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。