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• 2018-12-01 15:49發(fā)布了問答

  碳納米管 屬于什么材料

  　

  397人看過

• 2018-11-12 13:31發(fā)布了問答

  量子點(diǎn)中懸空鍵是什么樣子的鍵

  　

  484人看過

• 2017-10-23 14:52發(fā)布了問答

  量子點(diǎn)熒光檢測金屬離子機(jī)理怎么分析

  　

  395人看過

• 2017-06-25 12:13發(fā)布了問答

  什么是天然橡膠納米復(fù)合材料

  　

  430人看過

• 2017-05-16 09:32發(fā)布了問答

  石墨烯 怎么證明 化學(xué)接枝 物理混合

  　

  319人看過

• 2017-02-23 06:19發(fā)布了問答

  一般制備的納米材料和納米晶體有什么區(qū)別

  　

  520人看過

• 2016-12-26 15:16發(fā)布了問答

  香港城市大學(xué)材料工程及納米技術(shù)怎么樣

  　

  340人看過

• 2015-05-03 03:48發(fā)布了問答

  預(yù)焙陽極生坯冷卻后溫度偏高在焙燒裝爐后會(huì)產(chǎn)生那些影響？

  目前成型車間產(chǎn)量有限，輸送過來的生坯溫度偏高，有60度左右吧，焙燒車間為保證曲線的正常運(yùn)行，急于裝爐，然后用溫度大約200度左右的填充料做為覆蓋或?qū)娱g。不知會(huì)對(duì)產(chǎn)品產(chǎn)生哪些影響？

  474人看過

• 2015-04-19 21:10發(fā)布了問答

  小葉黃楊樹生蟲打什么藥

  　

  428人看過

• 2014-10-02 05:16發(fā)布了問答

  若某分散系中分散質(zhì)直徑大小為納米級(jí)，該分散系是膠體。對(duì)嗎？

  　

  428人看過

• 2014-04-20 02:40發(fā)布了問答

  大家知道 貶石帶著有什么好處啊

  　

  364人看過

• 2013-08-31 11:44發(fā)布了問答

  紅色警戒3為什么我建不了礦石精煉廠？

  我造了一輛MCV在礦脈旁邊展開了，為什么我建不了礦石精煉廠？我再建了個(gè)基地車過去展開了。還是建不了。

  871人看過

• 2010-07-26 00:48發(fā)布了問答

  什么是納米陶瓷材料

  什么是納米陶瓷材料

  561人看過

• 2009-04-11 11:36發(fā)布了問答

  很急！在線等答案！！關(guān)于納米材料的制備！

  我的本科論文是關(guān)于納米ZnO的制備，目前所用的幾種方法，如水熱法，直接沉淀法等，那么用這些方法是怎么樣保證得出的產(chǎn)品是納米級(jí)的呢？？？很急！在線等答案！

  447人看過

• 2006-10-18 01:46發(fā)布了問答

  翻譯納米材料摘要（2）

  Moreover， the particle size of incorporated ZnO calculated from the effective mass model was close to the results obtained from HRTEM. The synthesis method developed in course of this work can be used for the fabrication of different polym... Moreover， the particle size of incorporated ZnO calculated from the effective mass model was close to the results obtained from HRTEM. The synthesis method developed in course of this work can be used for the fabrication of different polymer-inorganic transparent nanocomposites with other functionalities. In the second part of the thesis， we studied a method for the fabrication of micro-porous surface layer – made of copper nanoparticles – on the surface of copper plates (suitable for heat exchangers). The micro-porous surfaces were formed from dendritic network of copper nanoparticles obtained by electrodeposition from solution using dynamic bubble formation and removal as template. The surface layer engineered and its structures were optimized in order to enhance the boiling heat transfer coefficient. To further optimize the dendritic structure， additional annealing step was introduce and its effect on the surface layer structure and properties were investigated. The properties of the deposited surface structures were investigated and its effect on the enhancement of the heart transfer coefficient has been studied. The fabricated enhanced surface has shown an excellent performance in nucleate boiling. Pool boiling tests were performed on refrigerant fluids (R134a) to evaluate the boiling performance of the electrodeposited nanostructured micro-porous structures. At heat flux of 1 W/cm2， the heat transfer coefficient is enhanced over 15 times compared to a plain reference surface. A model has been presented to explain the enhancement based on the structure characteristics. 展開

  415人看過

• 2005-11-13 10:45發(fā)布了問答

  什麼叫量子點(diǎn)

  用通俗點(diǎn)的話說

  526人看過