有效晶粒度 的英文怎麼說

中文拼音 [yǒuxiàojīnglìdù]
有效晶粒度 英文
effective grain size
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 晶 : Ⅰ形容詞（光亮） brilliant; glittering Ⅱ名詞1. （水晶） quartz; （rock） crystal 2. （晶體） any crystalline substance
  • 粒 : Ⅰ名 （小圓珠形或小碎塊形物） small particles; grain; granule; pellet Ⅱ量詞（用於粒狀物）
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 有效 : effective; valid; efficacious
  1. The raw materials, the composition, the time of milling, the calcining temperature, the different additives, the sintering temperature and the sintering parameters were investigated. the result showed : it was advantaged to obtain high initial permeability mnzn ferrite with stable frequency characteristic using high - purity raw materials ; in order to obtain mnzn ferrite with high properties, we must control strictly the composition ; it could improve the properties of mnzn ferrite by optimizing calcining temperature. the lower calcining temperature made the permeability higher, and the higher calcining temperature could promote the frequency characteristic of permeability ; we chosen the right time of milling according to the requirement of power diameter ; in order to improve the properties of mnzn ferrite, it is necessary to add effective additives. in this dissertation, the influence of bi2o3 、 moo3 、 k2co3 、 co2o3 were investigated ; the sintering temperature, the time of heat - retaining and sintering parameters were the key factors of preparing high permeability mnzn ferrites

    研究結果表明:採用高純度的fe2o3有利於獲得高起始磁導率且頻率特性優良的鐵氧體;為了制備所需性能的鐵氧體，需要嚴格控制配方中各種原材料的含量，優化配方;由於粉體活性受預燒條件的影響，所以對不同要求的鐵氧體選擇的預燒條件就不一樣，適當降低預燒溫度有利於獲得較高的起始磁導率，而為了獲得良好的頻率特性可以適當地提高預燒溫度;根據對粉體顆粒粒徑的不同需求，可以選擇不同的球磨時間;而有效的添加劑是改善材料性能的必要條件，本文在添加劑的研究中主要對bi2o3 、 moo3 、 k2co3 、 co2o3的影響分別作了詳細地討論;燒結溫度、保溫時間和燒結氣氛是高磁導率mnzn鐵氧體制備最關鍵的工藝，適宜的燒結工藝可以獲得理想微結構和組成，從而得到高性能的鐵氧體材料;而從材料的微結構上來看，要提高材料的截止頻率，就要適當地細化晶粒、增加晶粒內部的氣孔。
  2. The results indicated that, the fabrication process of ultra - fine grain material is mainly determined by the stress, rotate speed and the flux of cooling water. the grain refining and the hardening effect are mostly affected by the rotate speed and the flux of cooling water. compared with commercial ly12, the invalidate strength and the prolongation rate of the ultra - fine grain material are properly improved in the measurement of compression property ; and the abrupt change of the dilatability of the ultra - fine grain material at 500c is found ; also the phenomena of which the grain size of these microstructures is stable when annealed under 300c is observed

    研究表明，採用本文提出的摩擦壓扭強變形區轉移法可以得到棒狀的超細晶材料，軸向壓力、扭轉速度和溫度是採用該方法制備超細晶材料的主控參數；試件的旋轉轉速和冷卻速度對變形區晶粒細化和硬化效果影響顯著；超細晶ly12的壓縮性能與淬火+自然時效狀態的ly12壓縮性能相比，斷裂強度和延伸率均有一定程度的增強；超細晶ly12的熱膨脹系數在550左右發生明顯的變化。
  3. In this article the chelating precipitation method and the converting precipitation method were chosed to synthesis zno nanoparticles on the basis of the theory of synthesis of nanoparticles by precipitation. uniform and dispersed zno nanoparticles were prepared by the two methods because zn2 + of conformation crystal was flee slowly and the supersaturation was well controlled. the problem which zno nanoparticles are wide size and agglomerative was solved

    本文根據均相沉澱法合成納米粒子的原理，採用絡合沉澱法和沉澱轉化法合成納米氧化鋅。這兩種方法利用溶液中的構晶陽離子zn ~ （ 2 + ） ，緩慢地釋放出來，有效地控制了溶液中的過飽和度，可以得到粒徑均勻、分散的納米氧化鋅，解決現有制備工藝中納米氧化鋅粒徑分佈寬、易團聚的問題。
  4. We apply the system to the ultra - fine grain steel welding, the simulated mean grain size in cghaz agreed well with the corresponding independent experimental data. in this paper, three factors influencing the grain growth, the steep temperature gradient in haz. the grain boundary liquid and the precipitates particle, were studied specially using mc technique

    研究表明溫度梯度造成的「熱釘扎」現象和晶界液化現象都對靠近熔合線附近的晶粒長大有明顯的阻礙作用，對最終的晶粒大小分佈有重要的影響：而800mpa超細晶粒鑰中的tin粒子山于溶解溫度高，抑制奧氏體晶粒長大的效果十分顯著。
  5. 8 - 1. 2g / min, and collection efficiency achieve 8 - 10 % under these parameters. through the study on the dispersion process of the nanoparticle tio2 in water, the author finds out that whisk time, dispersant types, dispersant concentration, dispersing time, ph value, temperature and electrolyte concentration have significant influence on dispersing effects. through contrastive and orthogonal experiments, the author obtains that composite dispersants have better results than single dispersants

    研究表明，液料等離子噴塗制備的納米tio :顆粒平均粒徑為10 ~ 50nln ，其晶型以銳欽礦為主，且隨著電弧功率的增大，銳欽礦含量減少;在本次實驗工藝參數下，收集速率為0 . 8一1 . 29 / min ，收集效率為8一10 % o通過對納米ti02顆粒在水介質中的分散性研究，發現機械攪拌時間、分散劑種類及濃度、分散時間、 ph值、溶液溫度和電解質濃度對納米tio :顆粒的分散穩定性有很大的影響。
  6. Ecap was successfully used to refine ly12 alloy to 0. 5 m at room temperature after seven passes. the pretreatment process concluded from experiments was solution treated at 500 for 2h and overaging at 400 for 8h

    對普通高強度鋁合金ly12的室溫ecap的研究表明： ecap前的預處理對ly12室溫ecap的實現具有重要影響，採用500 2h固溶+ 400 8h過時效的預處理工藝，經七道次室溫ecap后，晶粒細化至0 . 5 m 。
  7. Moderate refinement of grain is an effective method to enhance service and shaping properties

    適度的晶粒細化是提高材料服役性能和加工成形性能的有效手段。
  8. Thus following measures should be adopted : 1. increase the pack density of micron diamond power to improve the pressure transmitting between diamond granules and decrease the distance between them

    提高金剛石微粉堆積密度以提高燒結時高壓傳遞的有效性和減小晶粒之間的距離； 2
  9. Uniform micro - structure, compacted grain : melting iron is solidified by heavy spin force at right temperature, which effectively avoid the failures like blowhole, slag enclosure, pinholes and etc

    組織均勻，晶粒緻密：溫度精確的合金溶液在上百倍的離心重力作用下凝固成型，得到緻密的組織；並有效克服了氣孔、夾渣、疏鬆等缺陷。
  10. In the process of making 95 alumina ceramics, selected five kinds of alumina powder and studied the influence of different alumina powder on the sintering properties and mechanic properties of 95 alumina ceramics, moreover, selected the most agreeable alumina powder according to the apparatus for granularity analysis and scanning electron microscope ( sem ). the influence of different sintering temperature on the sintering mechanic properties, the microstructure of 95 alumina ceramics were investigated by adding y2o3 and la2o3 as two kinds of rare earth additives in alumina ceramics. the results indicated that the additive of la2o3 could improve the properties of 95 alumina ceramics more effectively and could get fine grain and tabular alumina that can enhance the strength of the material

    選用了五種al2o3粉料，研究了其對95al2o3瓷燒結性能和力學性能的影響，並結合粒度分析儀sem對al2o3粉料進行優選；通過添加y2o3 、 la2o3兩種稀土添加劑，研究了不同燒成溫度對95al2o3瓷的燒結性能、力學性能及顯微結構等的影響，結果表明：添加la2o3可以有效提高95氧化鋁瓷燒結性能和力學性能，形成細晶和板狀氧化鋁瓷的顯微結構；通過對比不同氧化鋁粉料制備氧化鋁瓷燒成溫度曲線與燒結性能的關系，確定最佳的燒成溫度范圍為1570 ~ 1600 。
  11. The results show that the improved structure has obviously reduced pressure drop and increased axial speed of the nozzle, as a result the wallop of electroplating solution is improved and the thickness of diffused layer reduced, the electrodeposition process improved, and what is more, the coating structure has been compacted, crystalline particles fined and the performance improved

    結果表明，結構改進后，明顯減小了壓力損失，提高了噴嘴的抽向速度，電鍍液沖擊鍍件的沖擊力得到提高，有效地減少了擴散層的厚度，改善了電沉積過程，而且使鍍層組織緻密，晶粒細化性能得到提高。
  12. Abstract : to against the fact of the commercial available white noise generators are very expensive which is not good for general operations, a simple and effective limited band white noise generator is design. the generator is using the feature of dual polarity transistor, i. e., the power spectrurn density of particulate noise is not related to frequency in very wide band and close to white noise. the concrete circuit is also given

    文摘:針對市售白噪聲發生器價格昂貴，不利於一般場合使用的問題，介紹利用雙極性晶體管散粒噪聲功率譜密度在非常寬的范圍內與頻率無關，屬白噪聲這一特性，設計了一種簡捷、有效的限帶白噪聲發生器，並給出了具體電路。
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