电能

With the development of the railway electrification, roads -- power quality problems have become increasingly prominent.

随着我国电气化铁路的发展，路电电能质量问题日益突出。

PREFACE With the rapid development of the electric power projects and electrization of industrial corporations, more and more transformers have been used.

序言 随着电能的大规模应用，电力行业迅速发展和发电公司越来越多，变压器的使用也越来越广泛。

Electric energy into the energy of motion is only part of what the electromagnet does for us.

把电能转换成动能，只是我们利用磁铁的一个方面。

Turning electric energy into the energy of motion is only part of what the electromagnet does for us.

把电能转换成动能，只是我们利用磁铁的一个方面。

Electromagnetic coil is the most important components, it is converted to electrical energy of the core mechanical motion.

电磁线圈是其最主要的元件，由它将电能转换为铁芯的机械运动。

Due to its good effect in the reservation of information of signal abrupt change, mathematical morphology is often applied in the detection and location of short-term power quality disturbance, however, there is still a defect of invalid detection existing in partial detection methods based on mathematical morphology while some zero-crossing disturbances are detected. In this paper three mathematical morphology based disturbance detection and location methods, i.e., the method based on first-order derivation and morphological gradient, the method based on morphological gradient and soft threshold processing and the method based on dq decomposition and top-hat transform, are analyzed, that is, by means of simulation the adaptability of these methods in the analysis on the signals of voltage sag, voltage swell and electromagnetic transient oscillation is compared.

数学形态学因其在保留信号突变点信息方面有很好的效果，因此常用于短时电能质量扰动的检测和定位，但基于数学形态学的部分方法仍存在对某些过零点扰动检测失效的缺点，文章分析了3种基于数学形态学的扰动检测和定位方法，即基于1阶求导和形态梯度的方法、基于形态梯度和软阈值处理的方法、基于dq分解和高帽变换的方法，通过仿真比较了3种方法在分析电压暂降、电压暂升、电磁暂态振荡等信号方面的适应性，结果发现基于dq分解和高帽变换的方法在检测过零点扰动时具有很好的效果，因此选取这种方法对实测扰动数据进行了检测和定位分析。

Because of cheap electricity supply in bulk, it is possible that electrometallurgy is made into mass industrial production.

因为有了廉价电能的大量供应，电冶金才得以成为大规模的工业生产。

The mechanism that allows Electrophorus electricus to produce a shock as strong as a wall socket employs differences in the concentration of sodium ions in some 6,000 specialised cells called electrocytes.

此机构让电鳗一次放电产生的强度与电插座的强度相同，其运用大约6000单位的特殊放电细胞含有的钠离子产生电能。

The power quality is getting more and more attentions and it also become a research point in electrotechnics.

电能质量问题越来越受到人们的关注，也成为当前电工领域的研究热点。

Ultrashort Wave Electrotherapy Machine is an instrument which utilizes high frequency electric energy of ultrashort wave to act on humans organism for treatment.

超短波电疗机是利用超短波的高频电能作用于人的肌体进行治疗的仪器。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。