粉末活度 的英文怎麼說

中文拼音 [fěnmòhuódù]
粉末活度 英文
activity of powder
  • 粉 : Ⅰ名詞1 （粉末） powder 2 （用澱粉製成的粉條或粉絲） noodles or vermicelli made from bean potato o...
  • 末 : Ⅰ名詞1 （東西的梢;盡頭） tip; terminal; end 2 （非根本、非重要的事物） nonessentials; minor detai...
  • 活 : Ⅰ動詞1 （生存; 有生命） live 2 [書面語]（救活） save （the life of a person）:活人無算 （of a goo...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 粉末 : powder; flour; stive; smalls
  1. The analysis indicates that micropacking silica fume works to the density and relative density of rpc, and its pozzolanic effect helps the strength of rpc

    硅灰的微填充效應有利於提高活性粉末混凝土的密度和相對密度，而火山灰效應有利於提高其強度。
  2. The prime works are as follows : strain and stress distribution of section was analyzed. the effect of prestress degree. on cracking moment was explored. the relation of the unbonded prestress increment to effective reinforcement index and corresponding bonded prestress increment were studied. the formulae had been established

    其次，設計了三根活性粉末混凝土無粘結預應力疊合梁，兩點對稱集中加載、一次受力，得到了它們的截面應變分佈、撓度與變形、無粘結預應力鋼絞線的預應力增量、裂縫的發展與分佈以及極限荷載。
  3. The conclusions are as follows : ( 1 ) the compose of rpc has an effect on the bond behavior between cfrp bars and rpc : the bond strength between cfrp bars and rpc will increase with the decrease of water to cement ratio, but doesn ’ t obviously ; the adding of steel fiber can improve the bond behavior between cfrp bars and rpc significantly, but steel fiber will also effect the workability of rpc, consider the bond behavior and economy, the content of steel fiber should be 2 % ;. silica fume can improve the bond strength between cfrp bar and rpc, but the bond strength isn ’ t in proportion to the content of silica fume, in this experiment, the optimal content of silica fume is 0. 25 to 0. 35

    試驗研究得到如下結果: （ 1 ） rpc的材料組成對rpc與cfrp筋粘結強度的影響: cfrp筋與活性粉末混凝土的粘結強度隨著水膠比的降低而提高，但是提高的幅度並不明顯;鋼纖維的摻入，可以顯著提高cfrp筋與rpc的粘結強度，但是鋼纖維的增強效果與摻量並不是線性增加的關系，從綜合經濟性及粘結強度兩方面考慮，鋼纖維的最佳摻量為2 % ;摻入硅灰有利於改善粘結性能，但其摻量有一最佳范圍，在本次試驗中，硅灰的最佳摻量為0 . 25 0 . 35 。
  4. However, iron powder is liable to oxidation, which will reduce the surface activities of the powder and hinder the sintering process

    但是鐵粉很容易氧化，粉末表面活性降低，妨礙燒結過程的充分進行，使實際燒結過程難以達到理想的燒結程度。
  5. The influence of nano - al2o3 on the sintering and the properties of the si3n4 ceramics was researched in this paper. the samples with different amount of nano - al2o3 were obtained by using pressureless sintering at 1600, 1650, 1700 in the nitrogen atmosphere. the microstructure and the composition of the ceramics were determined by the means of x - ray, sem, micro - hardness meter etc. it is show that the sisty ceramics can be densified at 1650c to % percent of the theory density through the addition of nano - al2o3 ( the value could be 90 percent by other technique ). the crystalline growth of the cylindrical - si3n4 and the ratio of its longitude to its diameter are increased with the addition of nano - al2o3. a uniform microstructure and an fined crystal as well as more sialon phases can be obtained in the si3n4 ceramics through the addition of that

    實驗結果表明：在碳管爐中、氮氣保護下進行燒結，添加劑為納米al _ 2o _ 3粉末時，由於納米粉末的高活性、高燒結驅動力，在1650就可使si _ 3n _ 4完全地燒結，並使其緻密度可達理論密度的96以上（比其它工藝高6左右） ；同時，納米al _ 2o _ 3地加入大大促進了長柱狀? si _ 3n _ 4的生長和發育及柱狀晶長徑比的提高，使微觀結構均勻、細化，形成了更多力學性能優異的固體? sialon相，減少了不利於陶瓷材料性能的晶間玻璃相，凈化了晶界。
  6. Such parameters as in - service function, construction technique, construction speed, earthquake resistance behaviour and fire resistance behaviour were analyzed, the results showed that rpc filled in steel tube columns had advantages over other columns in the respects. from the economical analysis of different columns supporting similar loading, it can be seen that the material price of rpc filled in steel tube columns was the lowest. considering outstanding durability of rpc material, the macro - price of rpc filled in steel tube columns should be the lowest and the economical benefit should be the best

    通過對鋼管活性粉末混凝土柱的建築使用功能、施工工藝、施工速度、抗震性能、耐火性能等眾多指標的分析以及在構件承受相同荷載條件下鋼管活性粉末混凝土和不同強度的鋼管混凝土、鋼筋混凝土、鋼柱的材料造價的比較，可以看出，鋼管活性粉末混凝土的局部造價是最低的，結合rpc材料優異的耐久性能，可以認為該組合結構的材料造價是最低的，具有極好的經濟效益。
  7. The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion

    本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。
  8. Transmission electron micrographs showed that the resulted lanthanide were in the form of nanoparticles with an average primary particle size around 20 - 40 nm

    Tem測試結果表明真空條件下（ 13 - 40pa ） ，熱分解制得的活性金屬粉末的顆粒大小為20 - 40nm ，分散度好且純度高。
  9. Reactive powder concrete ( rpc ) is a new kind of compound concrete that has ultra - high strength, high ductility. besides having characteristic of concrete filled steel tubular, rpc filled steel tubular structure can decrease cross section owing to the ultra - high strength of rpc, and economize on concrete and small dead load. the structures have broad prospects in high commercial and civil building, many - storied factories, high - span bridges and urban traffic

    活性粉末混凝土（ rpc ）是一種新的超高性能、高韌性的水泥基復合材料，將其灌入鋼管形成鋼管活性粉末混凝土，這種結構除了具備鋼管混凝土的一般特性外，因其超高強度使構件截面尺寸大大減小，還可進一步節約混凝土並減輕結構自重，必將在高層建築、公共建築、多層廠房、橋梁、交通等領域有著廣泛的應用前景。
  10. Viewing solely from their performance, mdf, dsp, rpc all enjoy a high compressive strength. their flexural strength, fracture toughness and elastic module have broken the limit of traditional cement based materials. all these materials have acquired the features of high toughness material

    從材料性能審視，無宏觀缺陷水泥基材料、均布超細顆粒緻密體系、活性粉末混凝土等的抗壓強度都非常之高，其抗拉強度、斷裂韌性和彈性模量也突破了傳統水泥基材料的限度，這些材料具備了高強韌性材料的特徵。
  11. A 21 meter span unbonded prestressed composite beam fabricated from reactive powder concrete ( rfc ) was designed. then the performance and economy of this kind of beams were compared with conventional prestressed beams and steel - concrete composited beams. the results indicated that rfc beams have superior performance

    最後，對大跨度（ 21m ）梁，通過三種設計方案結構性能和經濟性等方面的對比，對採用活性粉末混凝土疊合梁的優越性進行了綜合評價。
  12. The results showed that activated charcoal and zeolite worked much better than others, and the content of purine compounds was fallen to 85 % and 65 % respectively than control

    結果表明， 100目粒度的粉末活性炭和人造沸石對啤酒中的嘌呤類物質的吸附能力很強，嘌呤類物質的含量較對照分別下降了85 %和65 % 。
  13. 1 while use surface activator and disperse pigment, system can grow to be thixotrpic structure during stir. operate according to following steps : add the paint material and solvent then mix - add the organic bentonite powder, stir with 10 minutes - add the polar active agent, stir 5 - 10 minutes - add surface active agent - add the pigment, stir and disperse to the needed granularity - dilute to the needed viscosity

    當使用表面活化劑以及分散顏料和攪拌下可發展觸變體系時，操作如下：溶劑和展色劑混合加入有機膨潤土粉末混合10分鐘加入極性活化劑攪拌5 - 10分鐘加入顏料攪拌分散至所需細度稀釋至所需粘度。
  14. 2 resin with bad wetness systems such as epoxy resin, polyester, alkyd, acrylic resin, operate as the following process : add the solvent - add organic bentonite powder mix and stir 10 minutes, wet enough - add the polar active agent mix and stir 5 - 10 minutes, make it swell and disperse - add resin and stir - add the surface active agent - add pigment, stir and disperse to the needed granularity - dilute to the needed viscosity main points for use methods

    2當使用潤濕性差的樹脂系統環氧，聚酯，短油酸樹脂，丙烯酸樹脂操作如下：加入溶劑混合加入有機膨潤土粉末攪拌混合10分鐘，使其完全潤濕加入極性活化劑攪拌混合5 - 10分鐘，使其膨脹，分散加入樹脂混合攪拌加入表面活化劑攪拌分散至所需細度稀釋至所需粘度。
  15. The results of the malvern laser analytical apparatus and sem also show that by adding a kind of surfactant into the reacting vessel, a evenly grain distribution precursor particl e that has a average grain size about 0. 5um can be obtained

    在反應中加入表面活性劑，用malvern激光粒度檢測儀和掃描電鏡觀察粉體的粒度及分佈狀態，可看出平均粒度在0 . 5 m左右的前驅體粉末分佈均勻，分散良好。
  16. Based on the basic principles of densified systems containing homogeneously arranged ultra - fine particles ( dsp ) and reactive powder concrete ( rpc ) adopted by foreign researchers specialized in building materials, silica rume, ultra - fine fly ash, quartz powder, 52. 5 - class portland cement and superplasticizer were selected and mixed, the theoretic of mixed steel fiber reinforced cement - based composite materials and of micro - aggregate filling voids were applied, the composition was adjusted, the mixture ratio of rpc was optimized, a suitable curing schedule was adopted, in the result, an ultra - high performance concrete designated rpc was successfully prepared by normal technology methods

    本文基於超細粒聚密材料（ dsp ）和活性粉末混凝土（ rpc ）配製的基本原理，選用硅灰、粉煤灰、石英粉和硅酸鹽水泥，輔以高效減水劑，採用多重復合的技術路線，運用混雜鋼纖維增強理論和微集料填充密實原理，調整材料組成，優化混凝土配合比，結合適宜的養護制度，在現有技術條件下，成功制備出了rpc200材料。
  17. The properties of these doped powders, the microstructure and composition of these rare - earth co - doped tungsten matrices and cathodes have been investigated by size analysis, xrd, sem and edax. the electronic emission performances of these cathodes are measured in uhv electron emission surveyor. aes is adopted to analyze the atom composition and diffusion behavior of active elements on cathode surfaces

    通過粒度分析、 xrd 、 sem 、 edax研究了摻雜粉末的特性、燒結基體和陰極的微觀結構和成分;用動態真空電子發射測試儀對上述陰極進行了電子發射水平的測試;採用aes對陰極表面原子組成和活性物質的擴散行為進行了研究，分析了陰極發射水平與表面原子組成的關系。
  18. The specimens of rpc filled in steel tube slender columns were studied, and test results showed that the ultimate loading capacity and maximum displacement decreased as the slender ratio l0 / d increased, the relative loading when the lateral deflection increasing fast decreased as the l0 / d increased

    對鋼管活性粉末混凝土中長柱的實驗研究表明，中長柱試件的承載力和極限位移都隨著試件的計算長徑比l _ 0 d的增大而降低（或減小） ，側向撓度迅速增大時的相對荷載也隨著計算長徑比l _ 0 d的增大而降低。
  19. This paper used the reactive powder concrete ( rpc ) as the inorganic anchoring material, and studied this material ’ s compositions and the materials mechanics properties ( mainly includes compressive strength, shearing strength, elasticity coefficient and poisson ' s ratio ), and also studied the contraction, durability ( including the rpc permeability, chemistry corrosiveness and anti - frozen performance ) and the heat - resistance of rpc

    本文採用活性粉末混凝土（ rpc ）為無機錨固材料，並對該材料的配合比，材料力學性能（主要包括抗壓強度，抗剪強度，彈性模量和泊松比）進行研究，還分析了rpc的收縮性、耐久性能（包括rpc的滲透性、化學侵蝕性和抗凍性能）和耐高溫性能。
  20. Depending on the densified system containing homogeneously arrayed ultra - fine particles ( dsp ) and the basic principles of reactive powder concrete ( rpc ) adopted by foreign researchers specialized in building materials, considering the characteristics of ultra - fine addition which can improve the workability and micro - structure of cement based materials and enhance the cementitious materials " packing density, we added blast slag silica fume crushed quartz superplasticizer and steel fiber into portland cement to produce the rpc by normal technology methods

    本文以活性粉末混凝土（ reactivepowderconcrete ，簡稱rpc ）的基本配製原理為基礎，結合近幾年來人們對高性能混凝土研究所提出的要求，選擇適合本地實情的材料，在傳統rpc的配製基礎上，摻入礦渣組分，配製出了抗壓強度達135mpa的活性粉末混凝土材料。本文對摻礦渣rpc的配製技術及其相關的性能作了系統的研究。
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