b-tube 中文意思是什麼

b-tube 解釋
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  • b :
  • tube : n 1 管，筒；顏料管。2 管狀地下隧道；〈口語〉（倫敦的）地下鐵道。3 【炮】炮身；【汽鍋】鍋管；【解...
  1. Tee, b type, asymmetry, titianium alloy, flared tube

    鈦合金擴口式不對稱b型三通管接頭
  2. 5 fixed whorl protective tube of awl type a fixed whorl protective tube of awl type b

    5固定螺紋直角形保護管式a固定螺紋直角形保護管式b
  3. Whole mount in situ hybridization showed that amphihmgb transcripts were present ubiquitously in the early embryos from zygote to neurula, but they decreased gradually in mesoderm and endoderm and neural tube with development, and became restricted to epidermal cells in the hatched larva. it appear s that hmgb plays a role in the mitosis and differentiation of embryonic cells. another amphioxus cdna, amphiubf80, encoding ubiquitin / ribosomal fused protein s27a, was isolated from the gut cdna library of b. belcheri tsingtauense

    S004cdna序列編碼一個156個氨基酸殘基組成的蛋白質，與人的泛素蛋白ubf80具有較高的氨基酸序列同源性（ 145 / 156同源） ，且該蛋白具有泛素蛋白ubf80所共有的兩個結構域，即由72個氨基酸組成的泛素介導的蛋白降解結構域和由48個氨基酸組成的核糖體蛋白s27a結構域。
  4. The 30 cases observations on b ultrasound trans - abdominal wall guided iodized oil into fallopian tube

    超經腹壁引導碘化油輸卵管造影30例觀察
  5. Folic acid is a naturally occurring b vitamin that helps a baby ' s neural tube ? he part of a developing baby that becomes the brain and spinal cord 梔 evelop properly

    葉酸通常天然含有維生素b ，而這種物質可以幫助嬰兒的神經中樞的發育，也就是促進了兒童大腦和脊柱的發育。
  6. With the development of doping technology, the formation of the base region in high - voltage transistor can be made by b diffusion technology, b - a1 paste - layer diffusion technology, close - tube ga - diffusion technology and open - tube gallium - diffusion technology

    隨著摻雜工藝的不斷發展，高反壓晶體管基區的形成經歷了擴硼工藝、硼鋁塗層擴散工藝、閉管擴鎵工藝到開管擴鎵工藝的發展。
  7. At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency

    在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。
  8. Electron gun, phosphor, getter, tungsten heater for b / w picture tube

    黑白顯像管用電子槍，熒光粉，吸氣劑，鎢加熱子等。
  9. For the first time, based on frame structure with large thick raft plinth and many engineering examples, analytic method of interaction that means the analysis on three parts above as a whole with a full consideration of interaction thereof that met the need of the deformation correspond on the boundary was used to research on the interaction of structure and groundsill in this paper. and five models were adopted, which were : ( 1 ) a tube with symmetrical double - axis structure and symmetrical loads, ( 2 ) two tubes with symmetrical double - axis structure and symmetrical loads, and ( 3 ) a tube with symmetrical single - axis structure and symmetrical loads, and ( 4 ) two tubes with symmetrical double - axis structure and unsymmetrical loads, and ( 5 ) two tubes with unsymmetrical structure and loads. based on the middle - thick slab theory from mindli and the model for groundsill from winkle, the deformation character of raft foundation and the distributing rule for resisting force of fundus were studied in details by using b ig - style fem ( finite element member ) software, ansys

    本文結合了大量的工程實例，以大底盤框架厚筏結構形式為研究對象，針對單個和多個塔樓布置於同一個大底盤框架厚筏基上的復雜結構體系，分（ 1 ）一個塔樓：結構布置雙軸對稱，荷載對稱的情況； （ 2 ）兩個塔樓：結構布置雙軸對稱，荷載對稱的情況； （ 3 ）一個塔樓：結構布置單軸對稱，荷載對稱的情? ； （ 4 ）兩個塔樓：結構布置雙軸對稱，荷載不對稱的情況； （ 5 ）兩個塔樓：結構布置和荷載均不對稱的情況等五種組合情況，全面系統地探討了上部結構?基礎?地基相互作用的大跨度基礎、基礎板變形特徵及其基底反力的分佈規律。
  10. During past year, 28 times of measurements for two units of b plant of zhelin hydropower station were made, the states of pressure pulsation in the draft cone tube, head cover and spiral case of units were acquired under different water heads, and the influences of that on safety and stability of units operations were also acquired

    摘要在長達一年多的時間里，對柘林水電廠b廠兩臺機組進行了28臺次試驗，全面掌握了機組各水頭下尾水錐管、頂蓋和渦殼中的壓力脈動情況，以及對機組安全穩定運行的影響。
  11. Flared type tube fittings - style b nut

    型管接頭螺母
  12. Gas discharge tube s varieties and standards are very complete. it is characteristic of feature b current resistance, small capacitance, rapid response, discharge voltage stabilization, and has no light sensation effect and does not contain any radioactive material. it is optimal lightning strike over - voltage protection devices

    其中陶瓷氣體放電管品種規格全，產品耐流強，電容小，響應時間快，放電電壓穩定無光敏效應，及不含任何放射性物質。
  13. B with 20 cm ccfl tube durable for around 10, 000 hours running

    燈頭採用萬向頭設計，燈管照明角度可360度方向調整
  14. B gfc machine is used for filling two color materials into one tube and sealing, filling material is of clear strip when it is squeezed

    Gfc型本機適用於在同一軟管內，灌裝兩種顏色物料的灌裝封尾，灌裝物料擠出時線條清晰。
  15. B gfc machine is used for filling double color materials into one tube and sealing, and the filling material has clear strip when it is squeezed

    Gfc型本機適用於在同一軟管內，灌裝兩種顏色物料的灌裝封尾，灌裝物料擠出時線條清晰。
  16. 6 jointing fixed protective tube of right angle a jointing fixed protective tube of right angle b

    6固定螺紋錐形保護管式a固定螺紋錐形保護管式b
  17. Elbow, b type, 90 degree, titianium alloy, flared tube

    鈦合金擴口式b型直角管接頭
  18. Elbow, b type, 45 degree, titianium alloy, flared tube

    鈦合金擴口式b型彎管接頭
  19. Single burner gas fired overhead radiant tube heaters and non - domestic gas - fired overhead luminous radiant heaters - requirements and test methods for establishing the rational use of energy - radiometric method b

    單端燃燒器燃氣的頂置輻射管式加熱器和非家用燃氣的光輻射式加熱器.確定合理使用能量的要求和試驗方法.輻射測量法b
  20. Single burner gas fired overhead radiant tube heaters and non - domestic gas - fired overhead luminous radiant heaters. requirements and test methods for establishing the rational use of energy. radiometric method b

    燃氣式單噴嘴裝于頂部的幅射管加熱器和非家用燃氣式裝于頂部的發光幅射加熱器.建立合理使用能源的要求和試驗方法.輻射測量方法b
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