The switch element generates an alternate current voltage having a quasi-higher frequency from a direct current voltage.
所述开关元件从直流电压中产生具有第一频率的第一交流电压。
This article describes the control principle of soft starter of alternate current electric motor, and the excellence and characteristic than normal starter.
本文阐述了交流电动机软起动控制器的控制原理，与常规的交流电动机起动控制器相比所具有的优点和特点。
The higher the frequency of alternate current, the higher oscillation frequency of the interface between slag pool and metal pool is, and the less amplitude is.
交流电频率越高，渣-金界面的振荡频率越大，振幅随之减小；
The steps of carrying on the method for measuring the life of luminescence are as follows:1 Use a sine alternate current with changeable frequency to stir up the sample;
该测 量发光寿命的方法的步骤：①用频率能够调节的正弦交流电激发样品；
The alternate current line side realizes the decoupling control of active power and reactive power through double closed loop and the stability of direct current voltages at the same time.
交流电网侧通过双闭环控制，实现有功功率和无功功率的解耦控制，同时具有稳定直流母线电压的能力。
Using commercial sodium silicate as electrolyte, aluminum surface was treated with plasma micro-arc oxidation under alternate current, film thickness increased with the increase of voltage.
以工业级硅酸钠为电解液，铝材在交流电压作用下进行等离子微弧氧化反应，电压升高，膜厚增大。
The utility model can solve the problems of no tight attraction, intense vibration, noise and electric arc when alternate current supplies power. The attracting voltage can be lowered to 120V;
组成能解决交流供电时产生的吸合不紧密，强烈振动、噪声、甚至发生电弧等问题。
The invention has high universality and is suitable for both the paper shredder adopting an alternate current motor and an induction motor and the paper shredder adopting a direct current motor.
本发明通用性强，既适用于采用交流电机、感应电机的碎纸机，又适用于采用直流电机的碎纸机。
After that, the author explore the factors which affect the real-time accurate measurement of the alternate current Parameters and discuss the realtime measurement methods of the alternate current.
并在此基础上分析了影响交流电参量的实时准确测量因素和交流电实时测量方法。
Because we are using it in combination with the hreflang attribute, we imply that the referenced Web page is a translated, alternate version of the current document.
由于我们将该属性与hreflang属性一起使用，因此意味着被引用的网页是当前文档的经过翻译的备选版本。
The current task or transaction userid needs UPDATE access to the alternate user profile that protects the alternate userid, in order to be authorized to use it.
当前任务或事务userid需要保护替代userid的替代用户配置文件的UPDATE访问权权限，以便获得使用它的授权。
Alternate user authority can allow the current userid to open and use a WebSphere MQ object with an alternate userid.
替代用户授权允许当前userid使用替代userid打开和使用WebSphereMQ对象。
Respeccing will reset your current talent profile, it won't reset your alternate spec. To reset them both you'll have to pay twice.
忘记技能将会重置你当前的天赋，而不会重置你的备用天赋，要想全部重置的话，需要付双倍的费用。
Satellite attitude control flywheel is driven by three-phase alternate commutating brushless DC motor, schema of which is torque control model (current feedback).
卫星姿控飞轮是由三相轮流换向无刷直流电动机驱动的，采用力矩控制(电流反馈)模式。
Porous silicon microcavities were etched with alternate varied current density which made the porosity change periodically.
多孔硅微腔是采用交替变化脉冲腐蚀电流密度的方法制成的多孔度周期性变化的多孔硅结构。
The alternate-current work characteristic and the direct-current magnetization of the magneto-elastic transducer with the transformer steel have been studied experimentally.
实验研究了取向硅钢片压磁式测力器的交流工作特性和直流磁化规律。
There are several alternate means of transmitting electric power, for example, by alternating or direct current, overhead or underground cable, and all over a wide range of voltages.
有多种送电途径可选择，例如由交流或直流，架室线或地下电缆送电并有各种电压等级。
Current medications for clinical depression are ineffective for a third of patients, which is why the development of alternate treatments is so important.
目前对临床抑郁症的药物治疗对三分之一的患者没有效果，这就是为什么要开发可替代的治疗方案显得尤为重要。
Current medications for clinical depression are ineffective for a third of patients, which is why the development of alternate treatments is so important.
目前对临床抑郁症的药物治疗对三分之一的患者没有效果，这就是为什么要开发可替代的治疗方案显得尤为重要。
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