負溫 的英文怎麼說

中文拼音 [wēn]
負溫 英文
negative temperature
  • : Ⅰ名詞1 (負擔) burden; load 2 (虧損) loss 3 (失敗) defeat Ⅱ動詞1 [書面語] (背) carry on th...
  • : Ⅰ形容詞(不冷不熱) warm; lukewarm; hot; gentle; mild Ⅱ名詞1 (溫度) temperature 2 (瘟) acute ...
  1. Indirectly heated temperature coefficient thermistors

    旁熱式負溫度系數熱敏電阻器
  2. The key parts of barretter are made of irf840 field - effect transistor, the magnetic ring and high frequency choking coil which adopting negative temperature index. such components can provide barretters a wide applicable voltage 160v - 250v. low power consumption, minor temperature rise, stable functions, long life - span

    鎮流器核心元件採用irf840場效應三極體,磁環及高頻扼流圈採用負溫系數,這樣的元件選擇使整流器適用電壓范圍寬160v - 250v ,功耗低,升小,性能十分穩定,確保其擁有很長的壽命。
  3. Power mosfets on - resistance will have a - ve temp coef and not + ve at low current levels. this is important to remember when paralleling devices

    功率mosfets導通電阻有負溫度系數,小電流時有正系數。當並聯這些器件的時候記住以上很重要。
  4. This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation, the project background based on qing - zang railway engineering, which is one of four - emphasized engineering during the tenth five - plan. due to the difference of environment of construction and service between nthpc and ordinary concrete, and therefore durability of nthpc is required to higher level. at a first, nthpc must avoid frozen damage at early age and possess anti - freezing property at later period, in order to meet engineering practicable application need, and this are two emphasized and difficult problems, as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period, adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc, based on orthogonal experimental approach, fd - 1 composite functional admixtu re was manufactured, which has more property and orientation on qing - zang railway

    負溫混凝土由於和普通混凝土在施工環境及服役環境上存在的差異,因此表現為比普通混凝土更為較高的耐久性要求;負溫混凝土首先要避免早期的凍害以及具備長期抗凍性能,才能夠滿足工程實際應用的要求,這也是負溫混凝土必須解決的兩大技術關鍵;通過對目前常用防凍劑組分作用機理的分析研究及混凝土早期防凍機理探討,採用礦物外加劑+防凍組分+高效減水劑+引氣+阻銹組分功能復合的技術路線,通過正交試驗設計復配了適應青藏鐵路工程要求的專用多功能復合型外加劑fd - 1 ;並在此基礎上配製不同等級負溫高性能混凝土,開展一系列包括硫酸鹽侵蝕、氯離子滲透、抗凍融循環、收縮及耐磨性等耐久性能研究;通過對fd - 1組分和摻量的調整,優化負溫混凝土在施工特性、力學指標和耐久性三個方面的兼容、協調性。
  5. The compatibility and harmony among workability, mechanical grade and durability are optimized, with the ground of adjusting composition and dosage of fd - 1 ; after analyzing anti - freezing damage mechanism, it is concluded that temperature is main factor, which affects structure and property of concrete. after two processes of temperature - elevation of hydration heat and temperature - descent of cold - environment, there is original damage in concrete and its existence leads to temperature fields, as results in temperature damage on transition phase > aggregate and cement mortar of concrete

    通過對負溫混凝土早期防凍分析研究認為,環境度對混凝土的結構形成及其性能的影響十分突出,水泥水化升和環境散熱降兩個過程導致混凝土結構內部產生不均勻度場,對過渡相、水泥砂漿以及骨料都能產生不同程度的度損傷,產生內部差應力裂紋,初始損傷也是不可避免的。
  6. Abstract : based on the fundamental principle of hypothesis strain equivalence, itwas investigated a physical concept of high strength concrete at minus temperature ( hscmt ) freezing damage parameter, the elastic modulus of frost concrete with anti freeziug admixture and without antifreezing admixture built and it was analyzed their variate process and the condition adaptated. it is purpose to judge hscmt frost failure process

    文摘:從應變等效性假說的基本原理出發,研究了負溫混凝土凍結損傷參數? ?彈性模量法中受凍后測試的損傷混凝土彈性模量的物理概念,從而分析了摻防凍劑混凝土及不摻防凍劑混凝土受凍后的彈性模量變化過程及其選用該參數的適應性條件,為判斷負溫高強混凝土材料凍結失效過程提供保證。
  7. Directly heated common negative temperature coefficient thermistors

    直熱式普通用負溫度系數熱敏電阻器
  8. Directly heated measuring type negative temperature coefficient thermistors

    直熱式測負溫度系數熱敏電阻器
  9. Components for electronic equipment. directly heated negative temperature coefficient thermistors

    電子設備元件.直接加熱負溫度系數的熱敏電阻
  10. Blank detail specification : directly heated negative temperature coefficient thermistors rod type ; german version en 143004 : 1991

    空白詳細規范.直接加熱的負溫度系數熱敏電阻
  11. Blank detail specification - directly heated negative temperature coefficient thermistors disk type ; german version en 143003 : 1991

    空白詳細規范.直接加熱的負溫度系數熱敏電阻
  12. Blank detail specification : directly heated negative temperature coefficient thermistors beads in envelopes ; german version en 143002 : 1991

    空白詳細規范.直接加熱的負溫度系數熱敏電阻
  13. Blank detail specification : directly heated negative temperature coefficient thermistors beads in solid glass or vitreous enamel ; german version en 143001 : 1991

    空白詳細規范.直接加熱的負溫度系數熱敏電阻
  14. According to negative temperature coefficient of vbe and positive temperature coefficient of vt, a framework of band - gap voltage reference is investigated. the reference offer a source of pir, distributed three voltage, one as upper - threshold voltage of dual - threshold comparator, the other as lower - threshold voltage of comparator, the other as direct current voltage for second band - pass filter amplifier

    同時利用pnp晶體管發射結電壓的負溫度特性和發射結差值電壓的正度特性設計了一個帶隙基準電壓源。此帶隙基準電壓源本身作為熱釋電紅外傳感器的電源電壓,同時分壓提供雙限電壓比較器的上限電平和下限電平以及第二級帶通濾波放大器的直流電平。
  15. Calcium - enriched fly ash debases the numerical value of critical strength of frozen injury and improves the microstructure because of its form effect, activity, tiny aggregate effect and self - hardening property. so it is feasible to make it an important component of minus - temperature concrete

    因為增鈣粉煤灰具有形態效應、活性效應、微集料效應和自凝性、自硬性等優勢,它改善了混凝土的微觀結構,降低了負溫混凝土的抗凍臨界強度,所以增鈣粉煤灰可以作為負溫混凝土的摻合料。
  16. Engineering application of negative temperature concrete in cold places

    寒冷地區負溫混凝土的工程應用
  17. Experimental study on steel fiber reinforced concrete under uniaxial compression at minus centigrade

    負溫鋼纖維混凝土受壓損傷過程的實驗研究
  18. Only when the concrete strength comes to the peak value, the strain will reduce with the decrease of the temperature

    混凝土應力達到峰值時的應變隨負溫值的增大而變小。
  19. It is concluded that the latter is 2. 05 ~ 2. 30 multiple than the former, and feng ' s formula approaches the practical diffusion coefficient of nthpc

    通過xrd 、 sem 、 mip 、 bet激光粒度分佈儀等多種測試手段研究fd一1外加劑對負溫高性能棍凝土耐久性增強機理。
  20. The descending part of the curves are much sharper than the ones under the normal temperature. the ductility of the concrete will also get worse and the brittleness will increase

    應力?應變曲線形狀隨負溫值的增大變得高而窄,曲線的下降段比常陡直,混凝土的延性變差,脆性增大。
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