查询词典 persistent wave

After QRS detection, the P wave and T wave is detected by the information of the amplitude and slope in certain section. This method works well for normal signals yet it isnt fit for the unmoral signals and diseased signals.

对于P、T波的检测问题，采用在特定区间内通过斜率和幅值加以检测的方法，对正常心电图检测效果较好，但不适用于不规则的和病态心电图。

However, by assuming all wave energy is concentrated in one frequency component rather than broad spectrum of ocean environment, regular wave theory gives an unrepresentative dynamic response.

该文阐述了新波浪理论的基本概念，介绍了一种新型的极限入射波浪模型，该模型考虑了天然海浪的随机性、谱性和方向性。

According to the principle of seismic refraction method, the formulas o f the depth and the thickness of the high-speed masses of rock are established using seismic refraction wave reversed and unrepressed time-distance curve and seismic refraction wave raypath theory in this paper.

根据浅层折射波方法原理利用浅层折射波相遇时距曲线与折射波射线路径关系建立了求取浅层高速埋伏岩体的埋深及其厚度的计算模式，利用这些公式可以较准确地确定高速埋伏岩体的位置、埋深及其厚度，对工程地质勘察是十分有利的。

In this model the fuse is simulated by a time variable nonlinear resistor combined with a switch, the nonlinear resistor represented the fore-arc resistor during fusing process, the switch is used to control the cut off time, and both of the above is calculated by the ANSYS. Compared the real assay curve and the simulation wave we found that: the calculated overvoltage amplitude value is accuracy with error less than 5%.But the wave is more or less different especially the part of the post-arc.

在电磁暂态计算程序——EMTP/ATP中，根据实际情况建立了熔断器开断试验电路的仿真模型，其中熔断器模型采用一个时间变量非线性电阻和开关的组合来代替，前者代表熔断器熔断过程的弧前电阻，后者控制开断时间，两者均由ANSYS计算得到。

By using this method, the boundary value problem of vector wave equation can be transformed Into two independent boundary value problems of scalar wave equations and other two additional vector differentia! operations.

用这种方法可以很方便地求解所有现在用并矢格林函数的本征展开法所能求得的各种并矢格林函数。

The earthquake happened in the place of anomalous area of high wave velocity ratio surrounded by low wave velocity ratio.

地震发生在低波速比异常区包围的高波速比异常区的交汇部位。

The magentic ultra long wave is one kind of vibratility not obvious wave which can penetrated flesh and blood nerve characteristic.

超长波是一种震动性不可见磁力线，具有贯通骨肉神经的特性，并没有刺激感。

This text introduce a sort of new pattern soft switch PFC circuit .First, analyze the develop course of the on-off power supply. Second, relate the harm of humorous wave to the commonality electricity net. Third, present the topology and the principium chart of the soft switch PFC and analyze it .At last ,set the parameter and simulates the converter of with matlab simulation. more over ,get the hold of well voltage and current wave , minish the spoilage of the circuit, enhance the efficience of the circuit, meet the demand of the miniaturization and viridity.

本文引入了一种新型的软开关PFC电路，首先分析了开关电源的发展历程，然后讲了谐波给公共电网造成的危害，再给出了这种软开关PFC的电路拓扑及原理图并对其工作原理进行了分析，最后对其参数进行设置在MATLAB软件进行了仿真，并得到了良好的电压电流波形，而且减小了电路的损耗，提高了电路的效率，实现了小型化，绿色化的要求。

The cleaning machine for ultrasonic wave capillary viscometer works by means of the cavitation of ultrasonic wave in liquid.

超声波毛细管粘度计清洗机是利用超声波在液体中的空化作用来完成的。

Ship resistance is composed of viscous resistance and wave-making resistance, whereas wave-making resistance is sensitive to the changing of the ship shape.

船舶阻力主要包括粘性阻力和兴波阻力，其中兴波阻力对船型的改变相当敏感，适当修改船体型线，有可能使兴波阻力明显降低。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。