脑深部刺激一直是精神病学的魔术:用电极植入精神病相关的区域,用具有快速脉冲弱电流刺激,然后,哇!
DEEP brain stimulation has long been psychiatry's black magic: stick electrodes into a region linked to mental illness, deliver rapid pulses of weak current, and voila!
脉冲大电流快速烧结技术是材料制备新技术之一,具有很大的发展潜力,但烧结机理一直存在争议。
Pulse electric current sintering is an advanced technology for materials synthesis and processing with potential application. But the sintering mechanism is in dispute.
利用HIOKI3164和TOPVIEW31分析软件,可对交-直-交变频器中电压、电流、功率、频率进行准确测量,不论它是不规则波形还是畸变波形。
In AC-DC-AC VVVF, We can accurately measure voltage, current, power and frequency with The HIOKI3164 and TOPVIEW31 analysis software, even if the wave is irregularities and distortion.
由于故障电流小、故障信号微弱、故障情况复杂及系统运行方式多样等原因,接地选线题目一直没有得到很好的解决。
Due to the small fault current, unobvious fault features, the complex fault circumstances and the various system run mode, the problem of fault line detection hasn't been well settled.
本实验以免载体股直肌为实验模型,研究了该肌在一定脉冲电流刺激下其初长度与收缩力、肌张力及肌力变化的相互关系。
The relations between the initial length of rabbit's muscles rectus femoris and its contraction tension were studied with stimulation of pulse electric current.
结合数学模型,讨论了有关矢量控制的原理和直轴电流最小控制的数字实现方法。
And according to the mathematical model, vector control principle and minimal direct axis current control and its digital realized method were discussed.
大电流、大电压的测量一直是困扰工程测量学的难题。
Measuring the big-electric current and the big voltage is a difficult work in engineering measurement.
直-交流腐蚀箔的漏电流最小,硬质交流腐蚀箔的抗拉强度及折弯次数最大。
The leakage current through DC-AC etched aluminum foil when anode finishing is least, while the tensile strength and bending property of hard AC-etched aluminum foil are best.
电流互感器(CT)饱和时,电流继电器能不能正确动作,一直存在二种载然不同的观点。
There are two different points of view on whether current relay operates correctly or not, when CT saturates.
在一种新型直管道燃烧器中用离子电流法,对预混天然气进行燃烧基础特性的测试。
An analysis was carried out on the basis of electromagnetism, using molecular current model, and by mathematic deduction.
根据冲击电流计测直螺线管磁场的实验电路原理,利用数值计算方法,对减少测量的系统误差进行了理论分析。
According to circuit principle of the experiment of measuring magnetic field in straight solenoid by impact galvanometer, theory analysis on reducing system error is done by using numerical method.
如何定义三相系统的瞬时无功电流、瞬时无功功率一直是学术界关心的问题。
How to define instantaneous reactive current and reactive power in three-phase non-sinusoidal asymmetrical systems is still a concerned problem by academia.
只要光一直照在这两种材料上,光电池就能不断提供电压和电流。
As long as light falls on the two materials, the photovoltaic Battery can continue to provide voltage and current.
大型母线式电流互感器(CT)的安装一直比较困难,针对这个问题介绍了一种母线式CT安装装置。
The installation of main type CT has ever been rather difficult. The paper introduces a device for installing main type CT.
交—直—交变频器按照交流电机电源电压的控制方法的不同,分为电压型和电流型两种。
Pay - Direct - cycloconverter supply voltage AC motor in accordance with the different control methods are divided into voltage-and current-mode two.
锌空气电池因其具有性能稳定、比能量高、放电电流大、原材料来源广泛、成本低廉等优点一直受到广泛重视。
Because of its steady performance, much more sources of raw material and low cost, the study and development of zinc - air battery are always paid more attention.
该方法以永磁同步电动机的定子交轴电压或直轴电压为控制量,利用电流的延迟反馈实现了混沌运动的控制。
The direct-axis or quadrature-axis stator voltage is used as manipulated variable and direct-axis or quadrature-axis stator current delay feedback is used for chaos control.
锌空气电池因其具有性能稳定、比能量高、放电电流大、原材料来源广泛、成本低廉等优点一直受到广泛重视。
Because of its steady performance, much more sources of raw material and low cost, the study and development of zinc-air battery are always paid more attention.
将电流引线的铜棒段由直棒型改为螺线管型,以节省空间,在有限的空间里面,尽量增长传热路径。
The shape of the bar copper segment of the current lead is transformed from the straight bar type to solenoid type to saving the space that means fully increasing the heat passage in the limit space.
由于直驱式风力发电机转速较低,定子绕组需要有较多的匝数以输出足够高的电压,因而绕组负载电流的去磁反应较大;
More turns of winding is needed to produce enough voltage because the DPMG rotates at low speed, but the armature reaction is high at same time.
他一直在进行有关电学的实验。1751年他发表了一篇论文,其中谈到电流和闪电是同一样的东西。
He had been experimenting with electricity, and in 1751 had published a paper saying that electricity and lightning were the same thing.
系列的线性轴电机是一款无刷的,直驱动伺服电机,由磁轴和运动线圈组成,运动线圈控制电流量。
S series Linear Shaft Motor is a brushless direct drive tubular linear servomotor consisting of just a magnetic shaft and a moving coil assembly (forcer) which is controlled by the flow of current.
在原动机仿真系统中,关于其速度电流综合调节器(实质为PI调节器)的参数一直以来都是依靠传统方法来确定的,这种方法不但耗费较多的时间,而且很难寻求到一组理想的参数。
In the prime mover simulation system, the parameters of the PI regulator are always confirmed in traditional method, but this method consume much time and is hard to get ideal parameters.
介绍了三相异步电动机的直轴和交轴模型的建立方法,并利用MATLAB语言对两种模型进行仿真,仿真数据包括定子电流、电磁转矩以及转速。
Introduces a constituting method for A-axis and D-axis models of three-phase asynchronous motor. Simulating for those two models by MATLAB language.
如何有效防止区外故障造成CT饱和而导致电流差动保护误动是人们一直在探索的课题。
So how to solve the current differential misprotection cased by CT saturation is a subject that has been exploring.
直测式是将霍尔器件置于具有线圈绕组或直穿母线的环型铁磁体气隙中,测出气隙里的磁压降,即为被测电流。
The direct measure mode is that Hall part is set into the interspace of loop winding or magnet coil, then the magnetism voltage difference or the current is measured.
由于逆变器输出的电流、电压的非线性,精确测量其效率一直是国内外亟待解决的难题。
Because of non linearity of output voltage and current of the inverter, accurate measurement of inverter efficiency has always been a difficult problem around the world and demands prompt solutions.
因此如何准确可靠地检测并隔离故障线路,寻找精度高的接地保护方法一直是小电流接地系统的一个重要研究课题。
The problem of how to detect and isolate fault feeder correctly and reliably, and look for a protection method with high precision is always an important research task.
因此如何准确可靠地检测并隔离故障线路,寻找精度高的接地保护方法一直是小电流接地系统的一个重要研究课题。
The problem of how to detect and isolate fault feeder correctly and reliably, and look for a protection method with high precision is always an important research task.
应用推荐