Object: To approach the reliability of high-frequency current acting upon the devitalization of dental pulp, the safety and clinical effect for peripheral tissues of root tip.
目的：探讨高频电流对牙髓失活作用的可靠性、对根尖周围组织的安全性及临床疗效。
The method employed high-frequency voltage-signal injection to make motor form a high-frequency current-vector, of which the negative component current contained rotor space-position information.
该方法采用高频电压载波注入方式形成高频电流矢量，其负序分量包含了转子空间位置信息。
The paper introduces the technique feature and the operation principle of chip CS5460A, and its application in high-accuracy power frequency voltage, current, power, power factor, frequency meter.
本文介绍了CS5460 A芯片的特点、工作原理及其在高精度工频电压、电流、功率、功率因数、频率表中的应用。
This paper is dedicated to discuss the definition, measurement and control method of High Frequency leakage current.
本文旨在对于高频漏电流的界定、检测及控制方法进行探讨。
The majority of the current pass the accessorial switch, but the switching frequency is low, so the switch consumption is not high.
辅助开关虽然流过大部分电流，但由于其开关频率低，因此开关损耗也不高。
It has characteristics of large current, high power, high voltage, high switch frequency, proven reliability, low losses and so on.
它具有大电流、高电压、开关频率高、高可靠性、结构紧凑、低损耗的特点。
The system may measure many circuits high - frequency alternating current , direct current , frequency, efficiency of inverter .
系统测试项目有多路高频交流电流，直流电流，频率，逆变器的效率等。
Shielding may be essential in a switching system if a mixture of low current, high voltage, and high frequency signals are present.
如果切换系统中会混合出现小电流、高电压和高频信号，屏蔽则非常关键。
The designing parameters of high frequency transformer and the protecting IGBT in plasma spraying inverter with high voltage and large current is analyzed in this paper.
分析了等离子喷涂逆变器在高电压大电流条件下，高频变压器参数设计和IGBT保护问题。
Performing high frequency eddy current inspection of area around skin cutout and make sure that no crack existing.
对蒙皮切口周边区域做高频涡流探伤检查并确定无裂纹存在。
Have high frequency and high ripple current characteristics.
具耐高频率及高纹波电流之特性。
How to get high frequency and high stability current pulse is the emphasis of this section. The paper put forward the concept of current adding switch.
将如何得到高重频、稳定的电流脉冲作为一个研究重点，提出电流叠加开关的概念。
APC conducts monopolar electro surgical high frequency current to tissue via an ionized argon gas stream (argon plasma) to coagulate the tissue.
APC通过氩气离子流(氩气等离子区)传导单极电外科高频电流到生物组织对其产生凝血作用。
The fixed switching frequency current tracing control is adopted in high frequency bridge, so the control circuit is simple.
高频桥采用恒频电流跟踪控制，控制电路简单。
One is abstracted from BUCK converter named single-loop model, which has only one high frequency current loop.
一个模型源自BUCK变换器，只有一个高频电流回路，称作单环模型。
Because of high-frequency effects (namely skin effect and proximity effect), the current flowing through those windings may be not equally divided among them, resulting in high ac resistance.
由于电磁场的高频效应(集肤效应和邻近效应)，可能导致电流在各并联绕组层中不均分，产生较高的交流电阻。
High frequency pulse current machining and fine finishing can improve parts' machining accuracy and surface quality.
高频脉冲电流加工及光整加工技术能提高零件的加工精度和表面质量。
The circuit has wide frequency bandwidth, high voltage and current transfer accuracy, simple structure. For this reason, it is easy to be realized with low cost for universal applications.
该电路具有频带宽、电压传输和电流传输精度高、结构简单、易于实现及成本低廉且实用性好的特点。
Through experiment the best eddy current exciting frequency for the detection of the high voltage transmission line is determined.
通过试验确定了高压输电导线电涡流检测的最佳激励频率。
The current distribution in fuses is discussed when high frequency components are present in the load current.
还讨论了在负载电流中引入高频分量时熔断器中的电流分布问题。
A new method is proposed, based on the instantaneous reactive power theory, to detect high frequency harmonic current and instantaneous reactive current applying high pass filter simultaneously.
基于瞬时无功功率理论提出了一种应用高通滤波器同时检测高次谐波电流和无功电流的新方法。
It is proposed that LCR output filter can decrease the peak value of the gain of voltage transfer function as well as the high frequency burr contained in the source current.
并且提出采用LCR输出滤波器来减小电压传递函数增益的峰值，从而在串联电感较小时能够同时减小电网电流中高频毛刺的含量。
This high frequency alternating current produces the high frequency radio waves mentioned in the previous chapter.
这种高频交流电流产生前一章提到过的高频无线电波。
The motor speed driving system USES DSP as controller and USES high-frequency delay-loop current comparator composed of integrated circuit.
设计了以DSP为控制器、集成电路构成高速滞环电流比较器的电机调速系统。
The results show that high frequency pulse electric current can refine and crinkle graphite flake, decrease the dimension of eutectic cell.
实验结果表明，在高频脉冲电流作用下铸铁石墨片细化，石墨片变得卷曲，共晶团尺寸减小。
Used in all kinds of direct current, impulse, high frequency and heavy current occasions, widely used in electric appliance that require high frequency, heavy current and high stability.
各种直流，脉动，高频较大电流场合，广泛应用于要求高频率，高电流，高稳定性的电器。
The PP-IP characteristics at low frequency high pulse current and the emission spectra at direct current have been investigated and analyzed.
研究和分析了它们在低频大电流脉冲注入下的Pp—Ip特性和直流注入下的光谱特性。
A method of the high voltage and high frequency parallel resonant converter with capacitive output filter which has the minimal peak input current is introduced.
建立了一种具有最小电流峰值的电容输出滤波高频高压并联谐振变流器分析设计方法。
A method of the high voltage and high frequency parallel resonant converter with capacitive output filter which has the minimal peak input current is introduced.
建立了一种具有最小电流峰值的电容输出滤波高频高压并联谐振变流器分析设计方法。
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