pt-c 中文意思是什麼

pt-c 解釋

  • pt : Pt ＝platinum 【化學】鉑。
  • c :
  1. The value of w2 as a function of transverse momentum pt and collision centrality is presented for both particles up to ~ 3. 0 gev / c

    我們稱碰撞參數b 0的碰撞為對心碰撞。這類碰撞具有初始的方位角對稱性。
  2. Xrd tests show that we have prepared pure lanio3 and pt / c catalysts. the lanio3 powder is electrically conductive. sem examination shows that the pt / c catalyst is the powder of small granules and is uniform in morphology

    測試結果表明，制得的鎳酸鑭粉體中含有氧化鑭相，粉體具有導電性；制得的pt c催化劑是純凈的pt和c相組分，粉體顆粒細小均勻。
  3. In the thesis, we proposed a random lattice model of mea the lattice model randomly occupied by three kinds of particles, pt / c, nafion and ptfe ( poly - tetra - fluoro - ethylene ), was generated on a computer by the means of monte carlo method. it was supposed that current was only produced on those catalysts which have not only channels of electrons via carbon but also have channels of proton via nafion. the purpose of the work, in a word, is to find how many catalysts, pt / c, with such a two - types channels

    本文首先建立了質子交換膜燃料電池的膜電極的隨機方格子模型，在電極模型各格點位置用montecarlo方法生成隨機分佈的電極粒子、 nafion粒子和聚四氟乙烯團粒，認為只有那些既有質子傳輸通道，又有連續的電子通道和氣體擴散通道的胞元才產生有效的電流，而其餘胞元不產生電流，把電極的輸出電流轉化成一個概率事件。
  4. Ptru / c, ptruwo _ 3 / c and ptrumoo _ 3 / c are prepared by chemical reduction of the appropriate salt solutions, and structural characterizations are carried out with x - ray diffraction. the result indicates pt and ru form alloy and the transition metal oxides are existed in amorphous form

    通過化學還原法合成了ptru / c ， ptruwo _ 3 / c和ptrumoo _ 3 / c三種碳載合金催化劑，並進行xrd及tem測試，發現鉑釕組成了合金相，而過渡金屬則是以無定型的結構存在的。
  5. Particle ratios embody the chemical equilibrium driven by inelastic interaction during rapid expansion when the temperature decreases in the colliding system, the measured hadron ratios provide the chemical composition of the fireball at the chemical freeze - out point and access the baryon transporter stopping ) for the initial conditions at early stage of the collisions. in this paper, we study the anti - proton to proton ratio from ig7au + 197 au collisions, analyzing p / p ratio as functions of rapidity, transverse momentum and centrality at ^ / saw = 200gev and the dependence on the center of mass energy of p / p ratio, compared with the experimental results. it shows that the p / p ratio has n ' t obvious dependence on rapidity for mid - rapidity, but shows a slight increase trend with pt increasing in the range of pt < 1gev / c for mini - bias or central collisions, and rqmd shows a more remarkable correlation between p / p ratio and centrality than experiments do at snn = 200gev

    研究表明：對廠在中心快度區沒有明顯的快度依賴性，在越靠近邊緣快度區， p p呈下降趨勢；在對心碰撞或者最小無偏事件中， p p在低橫動量區域隨著橫動量的升高而增大； p隨著碰撞對心度的比實驗結果表現出稍強的隨對心度增大而減小的趨勢，尤其是有再散射ujrqmd模型；在中心快度區， p p隨著碰撞的質心能量的提高而快速的增大，與實驗結果一致；在低能，有末態粒子再散射的d較好的預言了的：但是在mc能量下，有末態粒子在散射的d所預言的p p值比實驗值要小。
  6. The ratio of isopropyl alcohol and pure water and temperature in the process of freezing are considerated in the research of the preparation of the pt / c electrocatalysts with freeze - drying method. the result shows, when we use 300ml pure water to wash the carbon ( 40mg ) in isopropyl alcohol ( 20ml ) to alter the ratio of isopropyl alcohol and pure water, we get the electrocatalysts with high catalytic activity ; the use of the liquid nitrogen ( - 196 ) to freeze the suspension ( carbon and precursor solution ) can make the pt / c electrocatalysts in high dispersion

    採用300ml純水對20ml異丙醇中的40mg碳載體進行洗滌抽濾，來改變預凍液中的醇水比例，通過冷凍乾燥制備pt / c的性能較好;採用液氮對預凍液進行冷凍（預凍溫度為- 196 ）制備的pt / c催化劑性能較好;冷凍乾燥法可以有效地避免加熱乾燥過程中前軀體離子在碳載體表面的脫附和團聚，進而制備載量大、分散性好、粒徑較小的pt / c催化劑。
  7. The results of electrochemistry circle volt - ampere tests show that that ru02 - tio2 has catalytic activity for methanol oxidation, ni - al2o3 perpetrated by anode oxidation method has obvious catalytic activity. pt / c catalyst is the best catalysts for methanol oxidation of all the prepared catalysts

    電化學循環伏安測試表明， ruo _ 2 - tio _ 2催化劑顯示了一定的催化活性，採用陽極氧化法制備的ni - al _ 2o _ 3對甲醇表現出較為明顯的催化活性， pt c催化劑粉體的電催化活性最強。
  8. The electrocatalytic activities of the pt / c catalyst prepared with the solid phase reaction method for the ethanol oxidation is reported for the first time. it was found that the electrocatalytic activity of the pt / c catalyst with 20 % pt prepared with the solid phase reaction method is much better than that of the pt / c catalyst prepared with the traditional liquid phase reaction method

    首次研究了用固相反應法制得的pt c催化劑對乙醇氧化的電催化活性，發現用固相反應法制得的含pt量為20的pt c催化劑對乙醇氧化的電催化活性遠高於傳統的液相反應法制得的pt c催化劑。
  9. A strong pt dependence in u2 is observed up to 2. 0 gev / c

    而在實驗中大量存在的是b 0的非對心碰撞。
  10. The tem and eds measurements indicated that it is mainly due to the high dispersibility and small diameter of the pt - ru particles in the pt - ru / c catalyst prepared with the solid phase reaction method

    Tem和eds的測量表明，這主要是由於用固相反應方法制得了pt - ru c催化劑中的中文摘要k r的分散度好，平均粒徑4 、的緣故。
分享友人
分享到 Line

分享到臉書