集中電阻 的英文怎麼說
中文拼音 [jízhōngdiànzǔ]
集中電阻
英文
constriction resistance-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。Gmc network has better high - frequency performances and is easier to control on chip than rc network
與傳統的電阻電容結構相比，跨導電容結構有更好的高頻特性，在集成電路中較易控制。Among various fabrication techniques of thin film, the sol - gel process has gained much interest for the preparation of pzt thin film, due to ihe advantages of good homogeneity, easy control of composition, low in - ill i reaving temperature, easy formation of large area thin films pb ( zrxti : - k ) 0 :, ( pzt ) films were prepared on the ito coated glass plates and low resistor silicon wafer in sol - gel dip - coating process associated wi di heat treatment : at different temperatures and characterized by x - ray diffraction ( xrd ) and transmission electron microscopy ( tem ). lt is shown that the pzt ferroelectric thin films with ( 110 ) preferred orientation and well - crystallized perovskite structure can be obtained after annealing at 680 ? for 30 minutes on ito substrate and at 800 " c for lornin on silicon substrate
Pzt的制備方法有很多，其中溶膠?凝膠（ sol - gel ）方法可以和集成電路（ ic ）光刻工藝相互兼容，處理溫度低，有大面積塗敷性能，能精確地控制組分，無需復雜的真空設備，成本低廉，所以對于集成鐵電薄膜電容的應用這種方法有很廣闊的前景。本文利用sol - gel技術在摻錫的in _ 2o _ 3透明導電薄膜（ ito ）襯底和低阻硅襯底上成功地制備了pzt鐵電薄膜。運用了x射線衍射， sawyer - tower電路和lcr電橋分別對薄膜的晶化溫度，結構和電學性能進行了測試。Accelerometer is used widely for measuring acceleration in civil and military field. at present, there are several type of accelerometers such as piezoelectricity electric charge accelerometer, ic piezoelectricity electric accelerometer, compressive resistance accelerometer and alteration capacitance accelerometer. the main part in alteration capacitance accelerometer is capacitance measurement circuit. foreign countries have produced accelerometer that have tiny volume and high performance. however, our country is not able to produce such accelerometer due to the lack of technique
加速度計作為一種測量加速度的儀器，在民用、軍用領域都有廣泛的應用。目前市場上的加速度計主要有壓電式電荷加速度計、集成電路式壓電加速度計、壓阻式加速度計、變電容式加速度計等幾種類型的加速度計。變電容式加速度計的設計中一個重要的環節就是電容檢測電路的設計。Hebi can produce over 5000 industrial products, in which coal of hebi coal group company, high standard cement by tongli cement company, daily chemical products by tianyuan company, auto connectors by tianhai group, chipped capacitors by caihe company, fusing resistors by boda group, meat products by yongda company are famous and on the leading place in the market
工業產品5000多種，其中鶴壁無煙煤、同力水泥公司高標號水泥、天元公司日用化工品、天海集團汽車接插件和線束、華中科技公司、彩鶴公司片式電容、博大集團熔斷電阻、網路電阻、大用和永達公司肉製品等一大批知名品牌，在河南省乃至全國同行業享有較高聲譽。According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system
針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。The paper mainly consists of three parts : the theoretical parts include the summarization of meridian research, and the research about the characteristic of low impedance on meridian and acupoints. the second part focuses on the design of the testing instrument, which comprises hardware design and software design. detector collects the reflected information which is stimulated by micro - current on meridian and acupoints, then the signals are transacted by micro - controller and meridian arithmetic, finally the health status report is displayed on screen and can be printed
主要工作分為三個部分，第一部分是經絡研究綜述與經穴皮膚電阻抗特性;第二部分為儀器系統設計，包括硬體設計和軟體設計，實現對採集人體穴位經電流測試（給一定的電流刺激）所反射出來的信息，經微控制器和中醫經穴演算法的處理后，在屏幕上顯示或列印出被測者的健康狀況。Third, the circuit configuration and design principle of hall 1c fabricated in si bipolar process were considered. through analyzing and simulation, we understand the basic design technology of integrated hall switches. as a result, we designed the layout of a si bipolar integrated hall switch
論文對si雙極型霍爾開關集成電路的工作原理其中包括穩壓電路、放大電路和觸發電路等進行了認真的分析和模擬，重點研究了溫度補償、電阻修調等關鍵技術，並完成了高精度si雙極型霍爾開關集成電路的版圖設計。( 4 ) thermal pipelines are important parts of concentrated heat supply of the thermoelectricity combination. according to the thermal lube service prospect, the paper calculates thickness of the buried steam pipe, proposes a new opinion of the interface temperature controlling method, and also attempt to determine the resistance loss of the minimal steam tubes and wrote its program
（ 4 ）熱力管網是熱電聯產集中供熱系統的重要組成部分，本文根據熱力管道的發展趨勢，對直埋蒸汽管道的保溫層厚度計算，提出採用界面溫度控製法的見解，並進行編程計算，此外，還對直埋蒸汽主管道阻力損失進行編程計算的嘗試。As a new kind of motor, switched reluctance motor ( srm ) has a doubly salient structure, and its windings are only mounted on the stators. these characteristics bring srm lots of virtues : solid structure, high reliability and efficiency, good fault - tolerance, low cost etc. switched reluctance driver ( srd ) combined srm with modern power electronic technology and control technology
開關磁阻電機（ srm ）作為調速電動機的新品種，採用定、轉子雙凸極鐵心結構，並且只在定子上裝有集中繞組，轉子上無繞組或永磁體，具有結構簡單堅固、運行可靠、效率高、功率變換簡單、容錯性好和成本低等優點。In this thesis, scanning force microscopy ( sfm ) was used to study the nanoscale electric phenomena of the surface and interface properties of ferroelectric thin films. the experimental setup was calibrated by measuring potential distribution of the working resistance of integrated chip
在實驗儀器的驗證方面，選用集成電路晶元測試單元中的埋置條形電阻作為檢測對象，在電阻兩端外加直流偏壓后檢測電阻的電勢分佈，在已知電阻上電勢分佈的前提下，驗證了開爾文力顯微鏡檢測微區表面電勢的可靠性。Jiangsu days steel limited - production, scientific research, integration of the business, is the industry standard varieties of the most complete one of the special steel enterprises, will be able to produce acid stainless steel, heat - resistant stainless steel, welding of stainless steel, high temperature alloy electrical resistivity, magnetic alloys, expanding alloy material from the rods, bars, wires, tubes, strip
江蘇興天合金鋼有限公司集生產、科研、商貿為一體，是同行業中品種規格最齊全的特鋼企業之一，能生產耐酸不銹鋼、耐熱不銹鋼、焊接用不銹鋼、高溫電阻電熱合金、軟磁合金、膨脹合金等材質的線材、棒材、絲材、管材、帶材。The lower resistance should select properly, too big to make radio frequency signal drive collector current too little, too small to make amplifier instable easily
下偏電阻要選取適中，過大會使射頻信號推動集電極電流的能力過小，過小容易使放大器不穩定。The first, the effect of the sizes of coupling slots in a coupling double gap cavity on the cavity characteristics is studied through simulation computation of three dimensions electromagnetic field and analysis of equivalent lumped element circuit. it is concluded by the research that, in lower frequency band, bigger coupling slots in a coupling double gap cavity are beneficial to raising the characteristic impedance and lowering the frequency of it mode
第一，採用三維電磁場模擬計算方法和集中元件等效電路法研究了耦合雙間隙腔中耦合槽尺寸對諧振腔性能如何影響等問題，得出了重要結論：在較低頻率波段，耦合雙間隙腔中開大耦合槽有利於提高模的特性阻抗，降低模頻率。The gauge can be used in measuring the pressure of the service medium of liquid, vapour and gas which will not corrode copper or copper - alloys, it also can pass the measurement the to second instrument to realize the concentrated check and remot control
儀表用於測量對銅和銅合金無腐蝕作用的液體，蒸氣和氣體等介質的壓力，同時又將被測壓力以電阻至二次儀表上，以實現集中檢測和遠距離控制。The whole idea of the german blitzkrieg tactic was to concentrate massive armored forces, and massive close air support, to create an unstoppable rapidly moving " armor fist " that could smash through anything and cause havoc and chaos in the enemy ' s side, regardless of the enemy ' s total force
整個德國的閃電戰的精髓在於集中大規模裝甲部隊，這些部隊接受空軍的支援，形成一股不可阻擋的迅速移動的"鐵甲拳頭" ，可以粉碎任何通過，造成災難和混亂的原因敵人的一邊，不管敵人的總兵力Constant stator magnetic linkage control frequency converter includes power devices utilizing igbt, drive circuit using three - phase drive ic with multiple protection functions. pwm signal formation circuit in the way of voltage space vector control and realized with pld ( programmable logic device ) devices and compensation for the influence of supply voltage variation and stator resistance voltage drop
其中，恆定子磁鏈控制變頻器的設計中主電路採用功率器件igbt ；驅動電路採用三相多功能集成驅動晶元； pwm脈寬調制信號產生電路採用電壓空間矢量控制方式，由pld器件實現；對電源電壓變化及電阻壓降造成的影響進行了補償。On the basis of describing the situation of current logging technology and considering the atrocious environment and the superiority of video imaging well - logging, the logging system consists of hardware and software sub - system in this paper. according to the objective condition of logging, the design of hardware has taken special treatments : high - temperature - proof protection with particular equipment for the whole circuit, video collection with ccd, temperature signal gathering by pt resistance and v / f transform, depth measurement through photoelectric encoder and jitter elimination circuit
在系統的硬體設計中，針對油田測井的客觀環境，進行了特殊處理：對整體測量電路採用特種裝備進行耐高溫保護；對井下的視頻信號採用ccd攝像頭進行採集；對井下溫度信號利用鉑電阻和v f變換實現採集；對深度信號採用光電碼盤及去抖電路進行精確測量。A silicon self - aligned technology was achieved by using a smart power integrated technology to get high power of the circuit. vertical pnp transistor whose base is epitaxy layer was used as output. the collector of the vertical pnp transistor was set on the back of the chip with low resistance p + substrate as ohm contact
在工藝中，採用了smart功率集成技術實現電路的大功率，基區是外延層的縱向pnp晶體管作為輸出，將集電極置於晶元背面，採用低電阻率p ~ +襯底作為歐姆接觸。Four - point probe measurement technique is one of the most extensive means for examining the resistivity in the semiconductor industry. with continuous progress, semiconductor industry develops at a very fast speed, the integration level of ic becomes higher and higher. presently, the ic production is entering into the age of ulsi, then testings are more and more important
四探針測試技術是半導體工業檢測電阻率時採用最為廣泛的測試手段之一。隨著時代的不斷進步，半導體產業飛速發展，以單晶矽片為襯底的集成電路集成度越來越高，目前正進入甚大規模集成電路（ ulsi ）時代，測試在整個集成電路生產過程中的地位越來越重要。分享友人