1、

The Realizes of Single Chip Microcomputer Control Stepping Motor Chopping Wave Constant Current Division Driver

单片机控制的步进电动机斩波恒流细分驱动器的实现

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2、

three-phase full wave constant voltage rectifier

三相全波恒压整流器

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3、

Automatic voltage regulator for constant current charging three-phase full wave constant voltage rectifier

恒流充电用自动调压器三相全波恒压整流器

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4、
5、

Design of reactive type stepping motor chopping wave constant current division drive circuit

反应式步进电机斩波恒流细分驱动电路的设计

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6、

It adopts the techingue of active current wave-shaping to control continuous conduction of input current. Its switching-cycle is constant, and its conduction time is modulated according to the slope of input current.

它采用有源电流波形整形技术,控制输入电流连续导通,其控制开关的周期是固定的,导通时间的大小是根据输入电流的斜率进行调控。

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7、

Research and Development of Powerful PWM Complementary Direct Current and Constant Voltage Wave Clipper

大功率PWM互补型直流斩波稳压控制器的研究与开发

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8、

According to the requirements of high speed punching machining, a new drive manner for a stepping motor, which is run under high voltage constant phase current chopping wave and low voltage locking is put forward and designed.

根据高速冲压加工的要求,本文提出了一种新型的步进电机驱动方式&高压斩波恒流运行、低压锁定驱动,并设计研制了该驱动电路。

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9、

Relationships Between the Variation of the Solar Constant and the Solar Soft x-ray Radiation and LF Sky Wave Time Delay

太阳常数的变化与太阳软x射线辐射流量及低频天波时延的关系

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10、

A circuit for detecting QRS wave with dual time constant

双时值QRS波检出电路

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11、

Experimental Study on Wave Impedance and Lame Constant of Reservoir Sandstones

储层砂岩波阻抗及拉梅常数实验研究

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12、

The result shows that during a fast flexion the short time average angular speed is nearly constant, but the instantaneous speed appears to be a fluctuation wave.

模拟结果表明,在快速屈曲过程中,食指短时平均角速度近似为匀速,瞬时角速度呈现阻尼振荡形式。

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13、

With constant limited force and energy, and let in the electromagnetic wave of than light material volume, quality of material more small, the speed is faster than the speed.

以恒定有限的力与能量,任凭于比光的电磁波物质体积、质量更小的物质,则其速度就是超光速的。

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14、

Effect of Sine Wave Electro Magnetic Fields on Gas Adsorptive Constant

正弦波电磁场对瓦斯吸附常数的影响规律

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15、

G. constant peak current and constant peak voltage. It can realize the combination of many kind of pulse wave form.

该电源主电路采用逆变器技术和斩波技术,控制电路采用双重闭环PWM实时控制方式,具有恒峰值电流和恒峰值电压两种工作方式,可实现高速换向多种波形结构的组合。

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16、

The results show that when the wave vector with parallel to the interface exceeds the damping constant and the field strength exceeds a certain threshold, the population of interfacial optical phonons grows with time.

研究结果表明:当平行于界面的波矢超过衰减常数,场强超过某一阈值时,界面光学声子数随时间指数增加。

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17、

A New Method of Measuring the Grating Constant and the Wave Length

测量光栅常数和波长的一种新方法

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18、

As the speed is constant, when the frequency is increased, the wave length will.

因为速度不变,当频率增加时,波长就会减少。

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19、

An improved formula for computation of dielectric constant of water in 8mm Wave Length

8mm波段水介电常数计算的一种改进模式

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20、

With dielectric constant distribution function of Fourier coefficients as a foundation, we calculated the arbitrary shape two-dimensional photonic crystals' bandgap structures by PWM ( Plane Wave Expansion Method).

有了介电常数分布函数的傅立叶展开系数做基础,用平面波展开法计算了任意形状二维介质光子晶体的带隙结构,求解带结构的主要方法是通过计算本征方程的特征根。

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