電子換向 的英文怎麼說

中文拼音 [diànzihuànxiàng]
電子換向 英文
electronic commutation
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 電子 : [物理學] [電學] electron
  1. In america, the electronic signature legislation began with utah in 1995, utah digital signatare act is confined to regulate digital signature which is made by using cipher code, then, other states are also engaged in legislative activities to regulate digital signature, but the second state ( newyork ) has adopted a more common way in technology, in other words, the later legislation changed from concentrating on the concrete technolngy of digital signature to more widely regulating the common technology of all kinds of electroncc signature

    在美國，電子簽名立法始於1995年的猶他州，該州法案只限於調整使用密碼的數字簽名。之後，其他州也開始了數字簽名立法活動，但第二個進行此種立法的州（即紐約）採取一種技術上更為一般的方式，換言之，其後的立法從「集中於數字簽名的具體技術法律轉向廣泛調整各種電子簽名的一般技術法律。 」
  2. For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least

    直流電沉積時，基質金屬的沉積連續進行，粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附，重新回到溶液中;採用周期換向脈沖時，反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附，同時，反向脈沖電流對基質金屬的溶解作用，也會促進粒子的脫附，因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加，三種鍍層的晶粒都明顯細化，說明al _ 2o _ 3的存在阻止了晶粒的長大，提高了電沉積過程中晶核的形成速率。
  3. In the system, the collimation semiconductor laser - scanned beam scanning two perpendiculars direct of one plane of the measured workpiece at the same time is made. the beams with the dimension information of two perpendiculars direct are processed by the scanning receive system, the high - speed photoelectric transition and electronic data process. two measured results of the diametric directs and ellipse tolerance, etc, parameter, of the turning workpiece on the same plane are obtained by non - contact automatic measurement

    在單向激光掃描檢測技術的基礎之上，提出了一種雙向激光掃描檢測系統，其採用激光掃描檢測技術與特殊光學系統相結合，用準直半導體激光掃描光束對被測工件徑向某一截面的兩個相互垂直方向同時掃描，經掃描接收光學系統、高速光電變換、電子學系統和微機數據處理系統，對將攜帶有垂直方向被測量信息的光束進行處理，實現了回轉體工件同一截面兩個垂直方向的徑向尺寸和橢圓度等參數的非接觸自動測量，解決了同時非接觸測量回轉體零件同一截面兩個徑向尺寸的難題，它具有高速，高精度和非接觸自動測量等特點。
  4. Then this paper designs the client / server / server frame which suit to this system, and uses the oracle8i database as the background database, oracle9i application server as the application server on mesosphere. in addition, this system achieves the connection between database and application server by jdbc, makes java server page as the exploitive tool. in this way, this paper establishes an experimentation e - business system that realizes intercommunion of the produce data in machine enterprise

    接著，以client / server / server三層結構應用模式為基礎對企業的應用構架作了設計；以oracle8idatabase作為后臺數據庫； oracle9ias作為中間層的應用服務器；採用java的jdbc技術實現了應用服務器與數據庫服務器的連接；並以jsp作為系統前臺開發工具，建立起了一個面向機械製造企業生產數據交換的企業內部的實驗性質的電子商務平臺。
  5. Electronic funds transfer ( eft ) is one of the oldest epss and is used for transferring money from one bank account to another without any paper money changing hands

    電子轉賬是最早的電子支付系統之一，通常不通過任何手工紙幣交換，由一間銀行向另一間銀行進行現金轉賬。
  6. In the transition from lead to lead - free, for the manufacturers of electronic products, there is expected to be a period when lead and lead - free materials will be used within the same mounting process, the mixed solder joint which formed in this situation is very complicated

    摘要在從有鉛向無鉛轉換過程中，電子產品製造商不可避免會碰到同一組裝過程中有鉛和無鉛同時存在的混合情況，這種情況下形成的混合焊點是很復雜的。
  7. Design engineers now selecting pmbldc motors over conventional dc or induction motor drives for the following reasons : 1 ) the absence of brushes results in an essentially maintenance free operation and eliminates the undesirable effects of commutation such as sparks, brush - loss, radio - frequency interference, etc. 2 ) the low inertia of the rotor enhances the quality of the mechanical response of the motor, shortening the acceleration and deceleration time. 3 ) utilizing rare - earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size. 4 ) because of the absence of commutation segments, the stator construction is simple

    現在的工程師們更為青睞永磁無刷直流電動機是因為以下幾點原因： （ 1 ）去除了電刷的永磁無刷直流電動機徹底地免除了維護而且消除了我們不希望的由於換向帶來的火花、電刷損耗以及無線電干擾等等； （ 2 ）低轉動慣量的轉子提高了電機機械響應的質量，從而縮短了電機加速和減速的時間； （ 3 ）高矯頑力稀土永磁材料的使用使得同樣尺寸的永磁無刷直流電動機比傳統的直流電動機效率高； （ 4 ）由於沒有機械換向部分定子的結構簡單了。
  8. And, this thesis return as to it ' s measure to measure the proceeding error margin the analysis, and was analyzed by error margin the enthalpy different laboratory matchs the gb / t 7725 - 1996 standard, can be used for measuring the making the cold and making the heat ' s ability, the consuming, the cop, the breeze deal under the steady state or not steady state of air condition of diagraph room, and it can also test the influence of the four channels change to the face valve and and the electronic expanding valve to the whole function of the air condition

    而且，本論文還對其測量量進行誤差分析，經誤差分析該焓差室符合gb t7725 - 1996標準，可用於測量房間空調穩態及非穩態製冷能力和制熱能力、工耗、 cop以及空調器室內機組的風量，並能測試四通換向閥、電子膨脹閥等控制元件對空調器整體性能的影響。
  9. The fusing quality can be effected easily due to sever changes of commutator ' s temperature during the process

    換向器與各繞組之間的焊接質量是保證微電機轉子電學性能的關鍵所在。
  10. Automotive air conditioner accessories : automotive air conditioner cooler, evaporator, heat sink, air conditioner, temperature adjuster, heater, central cooler, air desiccators, cooling fan controller, internal heat exchanger, compressor, motor, air warmer, warm air device, electronic fan for cooling condenser, liquid can, thermal expansion valve, air condition pipeline, switch, clutch, connector, height valve, shunt valve and all kinds of automotive air conditioner production materials ( body aluminum, copper materials, etc ), production equipment, measurement equipment, etc

    車用空調配件：各種車用空調冷凝器、蒸發器、散熱器、空調器、調溫器、加熱器、中冷器、空氣乾燥器、冷卻風扇控制器、內部熱交換器、壓縮機、電動機、暖風機、暖風裝置、各種冷凝器電子扇、貯液灌、熱力膨脹閥；各種車用空調管路、開關、離合器、接頭、高低閥、換向閥及各種車用空調生產材料（車用鋁材、銅材等） 、生產設備、檢測設備等。
  11. Hongkong post today ( 17 april 2003 ) announces the appointment of two pop stars, miriam yeung and ekin cheng, as ambassadors to raise public awareness among all hong kong identity card holders of the option to embed an e - cert in the memory chip of the new smart id cards for one year free of charge in the coming hksar smart identity card replacement exercise

    香港郵政於今日（二三年四月十七日）宣布，委任本港紅歌星楊千?和鄭伊健為電子證書大使。兩位大使會向香港身份證持有人進行宣傳，告知市民可在即將展開的智能身份證換領計劃中，選擇把可供免費使用一年的電子證書加入智能身份證的記憶晶片內。
  12. With the development of electronic technology in the field of high - frequency and high - power, power mosfet is gradually enhancing its important status in semiconductor apparatus and is being widely applied in power converters as switch. with the increasing of the operating frequency ( > 200khz ), the energy loss caused by parasitic capacitance will affect the efficiency of power transforming in converters. especially in the applications of high frequency power supply using mosfet as main devices ( the unit of frequency is mhz ), the energy loss caused by the switch process will badly affect its efficiency

    隨著電力電子技術進一步向高頻的大功率用電領域發展，功率mosfet在各種電力半導體器件中的重要地位日益顯著，使用功率mosfet作為開關器件的功率轉換電路也日益增多，但隨著器件開關頻率的提高（大於200khz ） ，由器件極間電容引起的能量損耗將會影響到功率轉換電路的能量傳輸效率，特別是在以mosfet作為開關器件的高頻感應加熱電源中（工作頻率可達兆赫） ， mosfet在開關過程中的能量損耗嚴重影響到電源的效率，因此如何減小開關器件的損耗提高高頻功率轉換線路的效率成為電力電子技術領域的重要研究課題之一。
  13. Of the currently available coolers for electronic products with a high heat flux, microchannel heat sinks have been proved to be able to provide the best heat transfer performance and are one of the most promising coolers. the manifold microchannel ( mmc ) heat sink has many advantages such as low thermal resistance, compact structure, little amount of coolant, low flow rate, uniform temperature distribution along the flow direction and many others, so it is able to provide the best heat transfer performance : lowering the maxmal temperature and the temperature difference

    在目前高熱通量電子產品冷卻器中，微通道熱沉已被證實是傳熱性能最佳且最具應用潛力的冷卻方式之一，而歧管式微通道熱沉因具有低熱阻、結構緊湊、所需冷卻液量小、沿流動方向溫度分佈均勻等優點則成為減小電子元器件換熱表面最高溫度、降低溫度變化的一種有效方法。
  14. In other words, the electron can spin either one of two opposite directions.

    換言之，電子能夠繞著兩個相反方向中的任意一個自轉。
  15. It is to point to taxpayer, withhold obligor, dai zheng ' s person to use electronic data switch, email, cable, telex to perhaps be faxed wait for method to deal with what pay taxes is declared or the newspaper sends era to buckle acting capture, generation to receive acting capture report to express to declare means to the tax authority

    是指納稅人、扣繳義務人、代徵人採用電子數據交換、電子郵件、電報、電傳或者傳真等辦法向稅務機關辦理納稅申報或者報送代扣代繳、代收代繳報告表的申報方式。
  16. High frequency soft - switching conversion is an important subject of power electronics. it is a powerful approach of minimization of size and weight for power supplies

    高頻軟開關技術是電力電子學的一個重要的研究方向，是實現功率變換裝置小型化，模塊化的基礎。
  17. The chip jk3ce that is one of micro - controllers in motorola 68hc08 family is used as control unit in this system. the zero crossing point of the back emf can be obtained by comparing the terminal voltage with the virtual neutral point, then using the software of the system can figure out the commutation period. the electronic commutation replaces the mechanical commutation in this way

    本系統採用的控制晶元為motorola系列單片機中的jk3ce ，反電勢過零點可以通過比較電機端電壓和虛擬中點電壓來得到，將過零點信號送往單片機捕捉埠後由系統軟體來確定換相時刻，這樣就可以由電子換向裝置替代機械換相裝置，有利於提高系統運行的可靠性，並降低了系統維護的費用。
  18. Si9979cs can directly transform the motor rotor magnetic poles ’ displacements detected by hall groupware into the on - off signals of the 6 mosfets to realize electronical switch

    Si9979cs可直接將由霍爾組件檢測到的電機轉子磁極位置轉換成為6個mosfet功率管的開關信號，實現電子換向。
  19. The permanent magnet brushless dc motor is a dc motor using electronic commutation in place of mechanical commutation in fact, so it has excellent characteristics of dc motors, for example good start and timing performance. it simplifies the motor ' s structure and overcomes the friction disadvantages of ordinary dc motor because it does n ' t use mechanical commutation. it is extensively used in aviations, robots, digital machine tool and so on

    永磁無刷直流電動機實際上是以電子換向代替機械換向的直流電動機，因而保持了直流電動機的優良特性，具有較好的起動和調速性能，又因它無需機械換向器使電機的結構簡單，可以從根本上克服一般有刷直流電動機易於產生換向火花的弊病，在航天、機器人、數控機床等許多工業領域已得到廣泛應用。
  20. The permanent magnet brushless dc motor is a dc motor using electronic communication in place of mechanical communication in fact, so it has excellent characteristic of dc motors, for example good start and timing performance. it simplifies the motor ' s structure and overcomes the friction disadvantages of ordinary dc motor because it does n ' t use mechanical communication. it is extensively used in aviations, robots, digital machine tool and so on

    永磁無刷直流電動機實際上是以電子換向代替機械換向的直流電動機，因而保持了直流電動機的優良特性，具有較好的起動和調速性能，又因它無需機械換向器使電機的結構簡單，可以從根本上克服一般有刷直流電動機易於產生換向火花的弊病，在航天、機器人、數控機床等許多工業領域已得到廣泛應用。
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