查询词典 square wave

Objective In order to develop an electrotherapy apparatus with 50 kHz square wave pulse and to set up a new type of drug-iontophoresis system.

目的 研制50 kHz方波脉冲电疗仪，以建立新型药物离子导入系统。

The study and application of the primary current limiting harmonic excluder for the type of the thermal resistor ;2. A recorder based on the thermal resistor s is used to monitor and record the state of the dielectric sample which is put into HV square wave life testing.

该仪器通过PTC 热敏电阻监测高压回路中限流电阻温度变化提取介质击穿信号，以单片机AT89c55为运算控制中心，采用热信号时间差分数字算法处理及控制信号。

In order to take account of the effect of magnet field harmonic,the phase winding loop model is usually used in square wave propulsive motor.

为了充分考虑磁场各次谐波的作用，方波推进电动机一般采用相绕组回路的数学模型，模型中绕组参数的测量和计算较为复杂，其中带阻尼绕组的多相永磁同步推进电动机的绕组电感测量和计算尤为困难。

The fly-back topology is adopted for DC/DC boost stage for simplicity. Moreover, full-bridge topology is used for DC/AC stage to give a low frequency square wave power to HID lamp avoid the acoustic resonance.

直流/直流升压级采用电路简单之返驰式转换器；直流/交流级则利用全桥式转换器以提供低频方波电能并藉此避免音频共振。

As an example of the technique, let's compute the Fourier series which corresponds to a square wave.

作为这种方法的一个例子，让我们计算一个方波的傅里叶级数。

The calculation results show that the populations between the two states are Rabi oscillation in the absence of the rf field, square-wave oscillations in the presence of the slow rf field, and stair steps oscillations in the presence of the intermediate rf field.

计算结果表明：当调频场的频率比较低时，从一个态到另一个态的跃迁几率随时间演化为方波振荡；当调频场为中频时，跃迁几率为阶梯型振荡；在高频调频场中出现调频场的多光子共振。

To overcome the bulky , inflexibility of traditional analog d ither system,a new solution for ring laser gyroˉ scope was designed with field programmable gate array.T he digital dither control method was given and dither characteristics were analyzed by square wave driving signal s.

针对传统机抖激光陀螺模拟偏频系统体积大、难于控制的缺点，设计了一种基于 FPGA的全数字抖动控制方案，提出了数字抖动控制原理，分析了数字方波驱动信号的性能，实现了伪随机噪声的生成和注入。

Because of the relay, the input during this limit cycle is a square wave with a period related to the system dynamics.

由于继电器的存在，在这个极限循环中的输入将呈现一段与系统动态学相关的方波形式。

The data given in Figure 5 may be used to find the maximum surge current for a square wave of any pulse width between 1 ms and 1000 ms by plotting the applicable points on logarithmic paper.

图5给出的数据可能被用来寻找最大浪涌一脉冲宽度之间的任何一方波电流MS和对数作图文件的适用点1000毫秒。

Three-electrode system to sodium acetate - acetic acid, potassium chloride and mercury chloride solution to end solution, by stripping square wave voltammetry method for the determination of trace sewage cadmium.

采用三电极工作系统，以醋酸钠—醋酸，氯化钾和氯化汞溶液为底液，用方波溶出伏安法测定了污水中的微量镉。

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。