查询词典 supply frequency

The invention relates to an amplifier circuit containing a high-frequency transistor (1) and having a circuit (2) for adjusting the operating point, which provides a base current for the high-frequency transistor (1) according to the voltage released at a resistor (3) which is connected in the collector ring of the high-frequency transistor (1). The circuit (2) has a differentiating unit (20), fed by the supply voltage, which compares the voltage released at the resistor (3) with a reference voltage.

带有高频晶体管(1)的放大器电路具有一个用于工作点调整的电路(2)，其依赖于在连接在高频晶体管(1)的集电极电路中的电阻(3)上下降的电压为高频晶体管(1)提供基极电流，电路(2)具有一个由供电电压馈电的差分节(20)，其把在电阻(3)上下降的电压与基准电压比较。

In order to solve the application problem of conduction heating machining, this project investigates some problems, such as dynamic characteristics of heating power, features of circuit current and voltage, arc discharge states and so on. It also studies control characteristics of Uni-phase or Tri-phase Direct Current Power Supply and Inverse Switch Power Supply. A High Frequency Inverse Switch Commutate Power Supply is developed.

为了解决导电加热切削的应用问题，从加热电源的动态性能和回路的电流、电压特性及电弧放电状态等方面进行研究，分析比较了单、三相交直流电源和逆变开关电源的特点和控制特性，研制了高频逆变开关整流电源。

Vertically put the KAS detector on the upper part of the transmitter cover, turn EAS detector power supply switch on, EAS detector displays radio frequency output center frequency is: 8.2±0.05MHz; Adjust R15 (counterclockwise decrease, clockwise increase) can change radio frequency output center frequency.

把 EAS 检测仪垂直放置于发射机壳上部，按动 EAS 检测仪电源开关， EAS 检测仪显示射频输出中心频率为：8.2±0.05MHz ；调节 R15（反时针减少、顺时针增大）可改变射频输出中心频率。

On the basis of analysis and comparison of conventional and some modern dielectric loss measurement methods in this paper, considering the difficulty consist in the dielectric loss measurement, such as the problem of the locale measurement of dielectric loss the suffering the interference of the electric field in the electrified wire net, the influence of harmonics and the leakiness of frequency spectrum due to the change of the frequency in power supply etc. a new measurement method which the frequency conversion anti-jamming technology combines the fundamental waves phase detachment method is presented.

论文在分析了传统介质损耗测量方法和现代介质损耗测量方法的基础上，针对介质损耗检测中存在的技术问题，如现场测量时工频电网强电场干扰问题、高次谐波影响问题、供电电源频率改变所引起的频谱泄漏和栅栏效应等问题，提出了采用变频抗干扰技术和基波相位分离法相结合的新型测量方法。

Takes several energy saving measures for air conditioning system, such as large capacity centrifugal chillers working with variable frequency small capacity chillers, variable frequency and variable flow control on secondary pump water systems, cooling tower for four-pipe water system in winter, fan-coil unit for commercial peripheral zones and all-air systems for interior zones, variable frequency control on supply and exhaust air fans,...

采用了多项空调节能措施：大冷量离心冷水机组搭配变频小冷量机组，二次泵变频变流量空调水系统，四管制风机盘管冬季用冷却塔换冷供冷设计，商业外区风机盘管、内区全空气空调系统，送风机、排风机变频控制，过渡季、冬季利用室外新风通风降温的焓值控制设计。

Chapter one is "Introduction". On the basis of summarizing the history of the study of the pictophonetic characters, we suppose some theoretical principle, such as the principle of the correspondence between the form and the meaning of the individual graph of Chinese characters, the principle of the total graphs of Chinese characters being a character-formation system, and the principle of the optimum development of the character -formation system in the history, and som analytic methods, such as the methods of structrue-function analysis, form-position analysis and meaning factor analysis, in the study of the pictophonetic characters. Chapter two is titled"General knwledge of the pictophonetic character." We discuss their origins, nature and some standards of distingnishing them, introduce the knowledge about the editions of SHUO WEN JIE ZI, analyse the functions of the modules of pictophonetic characters in detail, discuss concretely the function of phonetic graphs showing origins and pronunciations, the function of meaning graphs showing meanings and analogies, and the function of distinguishment when the two kinds of graphs are conbined. Chapter three is"The system of meaning graphs of Xiao Zhuan system."After we describe the structure of the meaning graph system, the relations between meaning graphs, the distributions of the function of meaning graphs showing meanings, and the frequency of all this kind of graphs, we get a table of all meaning graphs, a table of the frequency. Chapter four is"The system of phonetic graphs of Xiao Zhuan system."We describe the structure of the phonetic graph system, the relations between phonetic graphs, and between their function showing origins and their function showing pronunciations, and their frequency, then we get ageneral table of phonetic graphs and table of their frequency. Chapter five is "conclusion". We think that systematical methodology is useful in describing and analysing the formation system of Chinese characters. The methodology is adaptable in describing the formation system of modern Chinese characters as well as the historical character systems, adaptable in describing horizontally as well as comparing vertically. Only when we finish the systematical vertical compare on the base of systematical horizontal decription, could we know the true history of the system of Chinese characters, recover the rule of the system's development, and supply the theoretical supports for the scientifical arrangement of modern Chinese characters.

第一部分—绪论，在总结形声字研究历史状况的基础上，提出了研究形声系统的理论原则和分析方法，即汉字个体字符形义统一的思想，汉字字符集合构形系统的思想，汉字构形系统历史演变系统优化的思想等三项理论原则和结构功能分析法，形位分析法，义素分析法等三种分析方法，还扼要地介绍了具体的工作程序和论文的主要内容；第二部分—形声字概述，论述了形声字的来源、性质和鉴别标准，介绍了对《说文解字》正篆形声字说解中的传抄讹误，版本异文，说解错误校勘和考证的经过，详细分析了形声字构件的功能，具体讨论了声符的示源功能与示音功能，义符的示意功能与类化功能以及声符与义符组合中的相互区别功能；第三部分—小篆字系的义符系统，从义符系统的构成、义符间的相互关系，义符示意功能的分布及义符的构字频度等不同侧面，对义符系统进行了全面的描写，产生了义符总表、义符间意义关系总表和义符构字频度总表；第四部分—小篆字系形声字的声符系统，从声符系统的构成、声符间的相互关系，声符的示源功能与示音功能的关系以及声符的构字频度等不同侧面，对声符系统进行了全面描写，产生了声符总表和声符构字频度总表；第五部分—结束语，在全面测查小篆字系形声字的基础上，对研究汉字的方法和现代汉字发展方向的问题提出了一些看法，认为系统论的方法是描写和分析汉字构形系统行之有效的方法，系统论方法，不仅适用于历史上文字系统的描写，也适用于现代汉字构形系统的描写，不仅适用了断代描写，也适用于历史比较，只有在对汉字断代系统描写的基础上进行系统的历史比较，才能认清汉字系统历史演变的真相，揭示汉字系统发展的客观规律，为科学地整理现代汉字提供理论上的依据。

The dissertation has researched on ultra-high frequency induction heating power supply and analyzed several classical topologies, which are commonly used in the ultra-high frequency power supply.

本论文以超高频感应加热电源为研究对象，对目前几种常用的经典电路拓扑结构作历史性回顾和分析。

Is located in the Qingpu District of Shanghai Huqingping 2599, Panda high-tech industrial park, is set research and development, manufacturing, sales automatic Jiaoyun sewage pumps, Sets, air compressor, antiscale Centrifugal pumps, constant pressure fire pump, no suction pipe network frequency automatic pressurized water supply equipment, pipeline cleaning equipment, frequency conversion kits water supply equipment, control cabinet, pressure complete sets of equipment in a body specialized company.

上海熊猫机械集团有限公司坐落于上海市青浦区沪青平公路2599号熊猫高科技工业园区内，是集研究、开发、制造、销售自动搅匀排污泵、高压清洗机、空压机、防垢离心泵、恒压消防泵、变频无负压管网自动增压给水设备、管道清理设备、变频成套供水设备、控制柜、气压成套设备于一体的专业集团公司。

A plasma generation apparatus includes: a chamber having a chamber lid and defining an airtight reaction region; a susceptor in the chamber; a gas supply means supplying a process gas to the chamber; and a toroidal core vertically disposed with respect to the susceptor through the chamber lid, comprising: a toroidal ferromagnetic core combined with the chamber, the toroidal ferromagnetic core having a first portion outside the chamber and a second portion inside the chamber, the second portion having an opening portion; a radio frequency power supply connected to the chamber; an induction coil electrically connected to the RF power supply, the induction coil rolling the first portion; and a matching circuit matching an impedance between the RF power supply and the induction coil.

一种等离子体产生装置包括：一腔室，其具有一腔室盖并界定一气密反应区域；一在所述腔室中的基座；一气体供应构件，其将一制程气体供应到所述腔室；和一环形铁芯，其穿过所述腔室盖相对于所述基座垂直设置，所述环形铁芯包含：一与所述腔室相组合的环形铁磁芯，所述环形铁磁芯具有一在所述腔室外的第一部分和一在所述腔室内的第二部分，所述第二部分具有一开口部分；一连接到所述腔室的射频电源；一电连接到所述RF电源的感应线圈，所述感应线圈卷绕所述第一部分；和一匹配电路，其匹配所述RF电源与所述感应线圈之间的一阻抗。

The introduction of some products are as follows: First, Taiwan's electronic devices Aosta Product:(self-produced self-marketing) program-controlled voltage insulation tester, grounding resistance, leakage current, micro-resistance tester, electrical parameters of the test Transformer parameters meter, insulation resistance tester, electronic load, on-machine, cable tester, variable frequency power supply, LCR Bridge, frequency meter, mV table, the standard signal generator, oscilloscope, signal generator, signal generator, digital multimeter, distortion device, before shaking device, spectrum analyzer, capacitance meter, inductance meter, modulation device, Sweep Signal Generator, Telephone Analyzer, Calibrator Table III, EMC Electric Tester, regulated power supply and so on.

现将部分产品介绍如下：程控耐压绝缘测试仪、接地电阻、泄漏电流、微电阻测试仪、电参数测试变压器参数测量仪、绝缘电阻测试仪、电子负载、导通机、排线测试仪、变频电源、LCR电桥、频率计、毫伏表、标准信号源、示波器、信号发生器、信号源、数字万用表、失真仪、抖摆仪、频谱分析仪、电容测量仪、电感测量仪、调制度仪、扫频信号发生器、电话分析仪、三用表校准仪、EMC电测仪、稳压电源等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。