With the development of oil fields and offshore oil fields to the mainland the transfer, as well as the Electric resilient seated gate valve power industry from 30 kw of thermal power to 30 million kw of thermal powend hydropowend nuclear power development, and valve products should be based on changes in corresponding changes in the field of device applications its performance and parameters.
随着石油开发向内地油田和海上油田的转移，以及电力工业由30万千瓦以下的火电向30万千瓦以上的火电及水电和核电发展，阀门产品也应依据设备应用领域变化相应改变其能及参数。
Alone show a license, the new licensing electric sprayer, after ten years of research and development, its core components - the electrical power consumption of large changes in the past, high speed, easy-axis wear, leaking seals easily damage caused by motor defects.
独秀牌、金新牌电动喷雾器，经历十几年的研制开发，它的核心部件-电机改变了过去耗电量大、转速过高、轴易磨损、密封圈容易漏水造成电机损坏的缺陷。
This paper has introduced that structure of inductance ballast of the gas discharge lamp and structure and performance of electronic ballast, has given some examples for applying the electronic ballast and has compared parameter change and light efficiency of inductance ballast with which of electronic ballast when voltage of electric power net changes.
介绍了气体放电灯电感式镇流器和电子式镇流器的结构特点、性能特点及电子镇流器的应用举例，并对两种镇流器电网电压变化时的参数变化、发光效率等进行了对比分析。
These changes can improve the efficiency of generator, reduce the number of generator and cut down cost of the electric power net.
上海电网附属华东电网的一部分，一旦发生全网停电只能依靠外部电网的支援来恢复供电，而不具备从内部自我启动恢复的能力。
Next, we use further the the two-dimensional model to consider the radial changes of the rf electric field and the power absorption. Especially, we study the influence of the radial distribution of the coil positions on the rf electric field.
其次，我们采用二维模型来进一步考虑径向变量对射频电场穿透行为的影响，特别是研究的射频线圈的径向位置的分布产生的影响。
With the going deep of our country electric power system reform large adjusts will occur on the industrial chain of construction of electric power projects. Large changes will take place on the circumstance and orientation of market of electric power design corporations.
随着我国电力体制改革的不断深化，电力工程建设的产业链将发生较大的调整，电力设计单位的市场环境、市场定位都将发生较大的变化。
The marketization leads to changes in vertical management mechanism of traditional electric power system, the reserve capacity and its dispatching method change consequently.
市场化导致了传统电力系统垂直管理体制的变化，备用容量大小的确定及其调度方法也将随之发生改变。
The information process in Electric Power Company is constantly advancing, the main business parts of electric communication have changed, and the slow developing of operation network and access network has restricted these changes in electric power communication.
随着电力企业信息化进程不断推进，电力通信主体已发生变化，业务网和接入网的缓慢发展制约了这一变化。
De-regulation and re-regulation have been taking place in electric power industry in many countries around the world. The reasons which brought to the reforms might arise from the changes of technologies, demand, economic constraints or political ideologies.
当今世界很多国家都在经历着电力行业规制放松或重建规制的实验，改革的动因可能源于技术、需求、经济约束或执政理念的变化。
Thus, the former electric power marketing idea and the strategy under the traditional short economical situation could not adapt to the changes of current electric power market supply-demand relation.
这使得传统短缺经济情况下的电力市场营销观念和策略已经不能适应当前电力市场供求关系的变化。
Because of the non-linearity of the electric arc, changes of the minerals during the ferroalloy smelting process and the fluctuation of the working conditions, the submerged arc furnace are unstable, which not only affects the quality of the production, but also increases the power consumption.
由于矿热炉电弧的非线性及铁合金冶炼过程中的炉料的变化、工况波动等的影响，使得矿热炉的工况不稳定，不仅影响产品的质量，而且导致电耗高。
Especially, along with construction and development of the intelligent power grid as well as policy changes of electricity price, the traditional electric meter already can not adapt to the development of intelligent power grid and the requirements of the customers.
尤其随着我国智能电网的建设发展和电价政策的改变，传统的电表已不能适应智能电网的发展和用户的要求。
Being a state owned and provincial key power supply cooperation, Hunan electric Power Company is challenged now by changes produced by constantly reforming circumstances of electronic industries. The status of the company purchasing for power grid construction is increasingly more prominent.
作为国有大型电网经营企业、湖南省重点骨干电力企业，湖南省电力公司正面临电力市场改革大环境带来的巨大挑战，招标采购工作在电网建设中的地位更日益突出。
Around these devices, the electric field strength is low, but the magnetic strength changes in a large range because of the influences of the operating conditions, and there is the positive correlation between it and the operating power.
这些设备周围的工频电场强度较低，而工频磁场强度变化范围较大，受设备运行工况的影响，磁场强度大小与运行功率高低有正相关性。
It is shown that the electric power changes suddenly at the boundary between the electrode and the photo-sensitive area.
指出在电极与光敏面交接处电功率发生跃变。
Input signal of PSS which is general applied is usually one of electric power and angular speed. But when prime mover power changes, single-input PSS can not distinguish system fluctuations and electric power fluctuations, this will easily leads " anti-regulation ".
该稳定器的输入信号主要是发电机电功率或转子角速度，但是当原动机的电功率发生变化时，单输入电力系统稳定器无法辨别系统功率波动和原动机功率波动，会导致反调现象的产生。
Input signal of PSS which is general applied is usually one of electric power and angular speed. But when prime mover power changes, single-input PSS can not distinguish system fluctuations and electric power fluctuations, this will easily leads " anti-regulation ".
该稳定器的输入信号主要是发电机电功率或转子角速度，但是当原动机的电功率发生变化时，单输入电力系统稳定器无法辨别系统功率波动和原动机功率波动，会导致反调现象的产生。
The; of down-lead of 200 A binary electric current that the design made intensity of central field magnetic induction be 3 T is opposite through the experiment of the thermal resistance of interior of the leakage heat of voltaic down-lead, heat exchanger and line of high temperature superconduction and cupreous matrix solder resistor undertook metrical, studied refrigeration engine trouble or the transient state temperature of down-lead of the electric current below power cut condition changes.
设计制作了中心场磁感应强度为3 T的200 A二元电流引线；通过实验对电流引线的漏热、换热器内部的热阻以及高温超导线和铜基体的焊接电阻进行了测量，并探究了制冷机故障或者停电状态下电流引线的瞬态温度变化。
In recent years, as economics'developing, Chinese electric power is step into a speed up growing period. There are more and more competitions in the market and so much changes happening in electric power system. Traditional electric power company's management system cannot raise our market share and enhance the customer satisfaction, also can not fit to future market's developing day by day.
近年来，随着经济快速增长，中国电力正进入一个超常发展时期，而面对市场竞争加强和电力体制的改革深入，要想在市场上占有率和客户满意度提高，传统的电力企业管理模式越来越不能适应未来竞争市场的发展要求。