fb-a 中文意思是什麼

fb-a 解釋

  • fb : 1. fire brigade 消防隊。2. flying boat 水上飛機,飛船。3. freight bill 運貨單。4. fullback (足球)后衛;后衛的位置。
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時,冠以不定冠詞主要表示類...
  1. Like the [ url = " http : / / www. hp - lexicon. org / bestiary / bestiary _ c - g. html # diricrawl " ] diricrawl [ / url ], the phoenix is herbivorous, and it also shares with the diricrawl the ability to disappear and reappear at will, although the phoenix does so in a burst of flames ( fb, cs17 )

    像球遁鳥一樣,鳳凰也是食草的,而且它也和球遁鳥一樣擁有死而復生能力,盡管鳳凰在火種涅磐(火焰杯,密室,第十七章) 。
  2. Mer - horse, with the head and forequarters of a horse and the hindquarters and tail of a giant fish ( fb )

    生活在海里,上半身是馬,包括馬頭和半截馬身;下半身是魚,體形龐大的半截魚腹和魚尾(神奇動物) 。
  3. A mer - horse, with the head and forequarters of a horse and the hindquarters and tail of a giant fish ( fb )

    生活在海里,上半身是馬,包括馬頭和半截馬身;下半身是魚,體形龐大的半截魚腹和魚尾(神奇動物) 。
  4. Worcestershire is a county in western england, and formerly the location of a monastery of franciscan friars, one of whom saw a jarvey in the middle ages in the monastery ' s herbe garden ( fb )

    伍斯特郡是英格蘭南部的一個郡,曾經是聖方濟會修士們的修道院的所在地,中世紀的時候,有一個修士在修道院的花園里看到過一隻土扒貂(神奇動物) 。
  5. The world ' s biggest and most famous kelpie is the loch ness monster, although it is often mistaken for a sea serpent ( fb )

    世界上體積最大,最出名的馬形水怪是尼斯湖怪,只是常被誤認為是海蛇(神奇動物) 。
  6. A witch or wizard seeking to take leaves or wood from a bowtruckle - inhabited tree should offer wood lice or fairy eggs to the bowtruckle to placate and distract it ( fb, op13 )

    想要從住了護樹羅鍋的樹上摘取樹葉或木材的巫師應該記得要給它們樹虱或者仙子卵,這可以撫慰它們,同時引開它們的注意(神奇動物在哪裡;鳳凰社,第13章) 。
  7. This garden pest resembles a pinkish mushroom covered with bristles, but is actually a carnivorous animal rather than a plant. horklumps are the favourite food of gnomes ( fb )

    這種菜園子里的害蟲很像一朵桃色的蘑菇,遮蓋住身上的硬毛。但實際上它是食肉動物,也是地精們最鐘愛的食物(神奇動物) 。
  8. A beautiful south pacific island nation, fiji is the native habitat of the fire crab. hundreds of miles of coastline there have been turned into a fire crab reservation ( fb )

    斐濟是一個迷人的南太平洋島國,為火螃蟹的棲息地。幾百英里的海岸線成了火螃蟹的居家良所(神奇動物) 。
  9. Publicly traded long - term debt securities, issued by corporations and governments, whereby t che issuer agrees 8601759 to pay a fixed aunt of interest over a specified fb period of time and to repay a fixed amount of principal at maturity

    公開交易之債務證券,一般由大型企業及政府發行,在發售債券日起至到期日期間必須定期繳付票息,並於到期日退回票面值,以抵償債券持有人之本金。
  10. A creature of the shore and coastline, resembling a lobster. the malaclaw ' s bite gives the victim bad luck for up to a week ( fb )

    生活在海濱的陸生動物,形似龍蝦。被軟爪陸蝦咬過,等著你的是一星期的霉運(神奇動物) 。
  11. Its main advantages are soft - switching while operating at constant switching frequency and a simple control. in order to be applied under more high voltage, the fb converter can also be converted to tl topology. using the basic tl topology derivation method, fb tl converter can be deduced

    應用三電平拓撲變換的基本方法,直接得到了全橋三電平直流變換器的拓撲結構,使其開關管的電壓應力降到輸入電壓的一半,進一步拓寬了全橋直流變換器的應用范圍。
  12. With the best modulation strategy which was found on condition that it must have largest energy transfer ratio, smallest current ripple of the inductor, and realizing zvs of each switches, the converter overcomes the drawbacks presented by the conventional zvs fb converter, such as high voltage stress of each switches, large current ripple of the inductor, and severe parasitic ringing on the rectifier diodes, so it can get higher efficiency, faster respond speed, and wider application area. the operation principle of the proposed converter is analyzed and verified by a 3kw, 50khz experimental prototype. experiments and research results show that the scheme of the tl topology derivation is reasonable, adjusted modulation strategy makes some other severe problems in conventional topologies easy to solve or makes the converter more competitive

    研究結果表明,本文提出的三電平拓撲變換方案合理,針對各種三電平拓撲尋找到的控制策略可以解決變換器存在的某些問題或使變換器表現出更突出的優勢:例如針對單管直流變換器三電平拓撲的控制策略可以減小電感的設計值,針對推挽直流變換器三電平拓撲的控制策略可以實現開關管的軟開關、解決變壓器偏磁問題等,針對全橋直流變換器三電平拓撲的控制策略可以減小電感的設計值、實現開關管的軟開關等。
  13. Railway rolling stock. grade a. countersunk and raised countersunk notched head machine screws. symbols f and fb

    鐵路車輛.開口的沉頭和半沉頭機器螺釘.級.符號和
  14. In dc - dc converters above a few kilowatts, the zvs full - bridge ( fb ) converter is a preferred topology

    全橋直流變換器由於結構上的優勢在中大功率的開關電源中應用較多。
  15. Deduce the fb formula for tsm, combined with the idiographic rule, a kind of mathematical model for capture probability is established, and the relationship between capture probability and scan parameter is analyzed, including the low speed scan and the high speed scan. and studied the confirmation for the best capture rule

    本文研究工作主要包括下述方面內容:推導了末敏子彈占空比的計算公式,並結合具體的捕獲準則,建立了捕獲概率數學模型,分別分析了高、低速掃描條件下的捕獲概率與掃描參數的關系,研究了最佳捕獲準則的確定。
  16. This paper analyzes the operation principle, discusses the design of the block capacitor and the output inductance. a prototype converter rated 1. 2kw is built in the lab to verify the effectiveness of the cdr zvs pwm h - fb tl converter

    論文詳細分析了該變換器的工作原理,討論了開關管實現zvs的條件、阻斷電容以及濾波電感值的選取等,最後進行了實驗驗證。
  17. By removing the two freewheeling diodes of the basic zvs pwm h - fb tl converter, a capacitor - clamped zvs pwm h - fb tl converter is obtained in this paper, and a new control strategy is proposed for the novel converter. the novel

    本文還提出了一種電容箝位型zvspwmh - fbtl變換器,它是在基本zvspwmh - fbtl變換器中去掉兩只續流二極體得到的。
  18. In the light of the method of top - down, the author put forward the concept of product function structure tree, which was used to express the product ' s function structure during the conceptual design. based on it, the product structure was expressedthe paper studies the definition of the function model which supports the method of top - down design, and the expression of function model based on binary - tree was also put forward in the thesis. for the abstract description of parts in the assembly level and the integration with other systems during the whole life circle of the products, the concept of assembly model was presented, the definiton, classfication and expresstion method of assembly feature was studied in this thesis. the representation of assembly relationship and data structure of the assembly model based on diagram was further studied. for the constraints transfer between function model and assembly model, an hierarchical component model is presented. an arithmetic of the change of assembly relationship when assembly model changing was also studied. fmally, a system named fb - tpms, which using object oriented programming technology and pro / toolkit, was developed

    為了支持在裝配層次上的零件的抽象建模,提出了骨架模型的概念,並討論了裝配模型的建立方法。根據前述裝配模型有關研究,探討了從功能模型到裝配模型以及從上一級裝配模型到下一級裝配模型的數據和約束傳遞問題,並用層次化單元裝配模型得以解決,同時提出了裝配模型變動時引起的裝配關系的變化的有關演算法。在論文的最後部分用用面向對象的程序設計方法,結合課題要求,研究了支持自頂向下設計方法的裝配建模系統fb - tpms 。
  19. Among them, phase shifted ( ps ) full bridge ( fb ) zero - voltage - switched ( zvs ) pulse - width - modulated ( pwm ) dc / dc converter has strong competitive power in big power capacity fields. but it has some limitations such as smaller load range with zvs and larger circulation energy. the ps - fb - zvs - pwm dc / dc converter with a saturable inductor utilizes saturable inductor s critical saturable current characteristic and storage energy, to enlarge load range with zvs and improve output efficiency under light load

    其中,移相控制零電壓開關脈寬調制dc / dc全橋變換器在大容量領域很有競爭力,但它具有實現零電壓開關負載范圍小,循環能量大等限制,帶飽和電感的移相控制零電壓開關全橋變換器利用飽和電感的臨界飽和電流特性及儲能,來擴大零電壓開關( zvs )的負載范圍,提高輕載時的輸出效率,具有非常重要的研究價值。
  20. The zero - voltage - switching ( zvs ) pwm hybrid full - bridge three - level ( h - fb tl ) converter can operate in both three - level mode and two - level mode, the output rectified voltage is close to the output voltage over the entire input voltage range, thus the output filter can be reduced significantly, leading to high power density and fast dynamic response. so the zvs pwm h - fb tl converter is very attractive for the applications such as fuel cells, photovoltaic cells, and telecom power supplies, where the voltage varies in a wide range

    零電壓開關復合式全橋三電平( zero - voltage - switchingpwmhybridfull - bridgethree - level , zvspwmh - fbtl )變換器可以工作在三電平模式和兩電平模式,在很寬的輸入電壓范圍內,輸出整流電壓都接近輸出電壓,從而可以減小輸出濾波器,因此可以提高變換器的功率密度和改善動態性能。
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