Some features of the movement of internal particles within the concrete accompanied with settlement, segregation,and bleeding are analysed and investigated in this paper,and some methods for reducing the concrete shrinkage such as stipulating the concrete curing conditions,employing the skeleton effect of coarse aggregate,and creating nonhomogeneous phase coring are also investigated.
分析研究了混凝土沉降、離析、泌水時(shí)內(nèi)部顆粒的運(yùn)動(dòng)特征和利用混凝土養(yǎng)護(hù)條件、粗骨料骨架作用以及非均態(tài)成核等方法來降低混凝土的收縮。
The interfacial tension,energy of formation and critical radius of nuclei of the crystal at different temperature are calculated based on classical homogeneous nucleation theo.
本文對(duì)硒酸氫銣 (RbHSeO4 ,RHSe)晶體生長過飽和溶液的均勻成核過程進(jìn)行了初步的研究。
3,the homogeneous nucleation play a dominating role in the nucleation;when S<1.
3時(shí),均勻成核起主導(dǎo)作用;當(dāng)S<1。
Mechanism of homogeneous nucleation in supersaturated sodium aliminate solutions;
過飽和鋁酸鈉溶液中Al(OH)_3均相成核機(jī)理
Using urea as homogeneous precipitation agent,nanosize zinc oxide crystalline with a small size and a narrow size ditribution has been synthesized at 130℃ and a reaction time 2～5h by homogeneous nucleation method in hydrothermal process.
Zn2 +的均相成核與其濃度、OH- 的濃度有關(guān) ,體系中Zn(OH) 2 的過飽和度越大 ,則成核數(shù)量越多 ,所制備的氧化鋅顆粒越小 ;與以氫氧化鋅膠體為前驅(qū)體的共沉淀技術(shù)相比 ,均相沉淀技術(shù)有利于氧化鋅納米晶粒均勻生長 ;此外 ,添加有機(jī)物作分散劑可以減弱微小晶粒間的疊合生長 ,有利于制備均一性較好的納米氧化鋅。
The pre expansion operation of rapid expansion of supercritical solution (RESS) is investigated by classical homogeneous nucleation theory in this article.
用均相成核理論分析了超臨界ＣＯ２ 快速膨脹法（ＲＥＳＳ）制備灰黃霉素微細(xì)顆粒過程中的預(yù)膨脹操作。
Ferrite MgFe2O4 coated carbonyl iron composite powder was prepared by heterogeneous nucleation combined with the liquid deposition method to improve the oxidation resistance performance of carbonyl iron powder.
采用非均勻成核和化學(xué)沉淀相結(jié)合的方法制備了MgFe2O4鐵氧體原位包覆羰基鐵超細(xì)復(fù)合粉體,對(duì)制備工藝及其抗氧化性能進(jìn)行了研究。
Al_2O_3 nanosized composite powders encapsulated by ZrO_2(3Y) were prepared by heterogeneous nucleation combined with the co-deposition and were molded by dry pressing.
用非均勻成核法和液相共沉淀法相結(jié)合的方法制得ZrO2(3Y)包裹Al2O3納米復(fù)合粉體,經(jīng)干壓成型,常壓燒結(jié)制備ZTA復(fù)相陶瓷。
ZrO_2(3Y)encapsulated Al_2O_3 nano composite powders were prepared by heterogeneous nucleation combined with the liquid co-deposition method using pH buffer solution as precipitator.
以pH值緩沖溶液為沉淀劑,用非均勻成核和液相共沉淀相結(jié)合的方法合成出了ZrO2(3Y)包裹Al2O3納米復(fù)合粉體。
The precursors of hydrate ferric oxide and basic nickel carbonate coated graphite microspheres were synthesized by the aqueous heterogeneous nucleation process using ferrous (Ⅱ) sulfate, nickel sulfate, sodium carbonate and graphite microspheres as main raw materials.
以硫酸亞鐵、硫酸鎳、碳酸鈉和石墨微球?yàn)橹饕?利用非均相成核工藝制備出水合氧化鐵和堿式碳酸鎳均勻包覆石墨的前驅(qū)體微球;通過對(duì)前驅(qū)體進(jìn)行熱還原處理得到了晶粒約為50nm的γ-FeNi合金顆粒層包覆石墨的產(chǎn)物微球。
The precursor microspheres of Fe_2O_3·nH_2O coated with graphite were synthesized by the aqueous heterogeneous nucleation using ferrous(Ⅱ)sulfate,sodium carbonate and graphite microspheres as main raw materials.
以硫酸亞鐵、碳酸鈉和石墨微球?yàn)橹饕?利用非均相成核法制備出Fe2O3。
Heterogeneousnucleation Coating Technique of Graphite and Its Application;
石墨表面非均勻成核包覆技術(shù)與應(yīng)用研究
MOLECULAR DYNAMIC SIMULATION OF THE HOMOGENEOUS AND NON-HOMOGENEOUS NUCLEATION OF ARGON VAPOR
氬蒸氣均勻核化與非均勻核化的分子動(dòng)力學(xué)模擬
The results indicate that phosphate film forms at first at the boundaries between ferrite and graphite.
結(jié)果表明，磷化膜晶核首先在鐵素體－石墨界面等處形成，是一個(gè)不均勻形核過程。
Molecular Dynamic Simulation on Homogeneous Nucleation Rate of Argon Vapor
氬蒸氣均勻核化率的分子動(dòng)力學(xué)模擬
Mash the bananas with a tablespoon, adding vanilla extract and salt. Mix well. Chop the walnuts and dried cranberryes.
香蕉用湯勺搗成泥，加入香草精和鹽拌均勻。將蔓越橘和核桃仁切成小粒狀。
Optimizing Yanbian Cow Oocytes Mature in vitro and Cleavage System after Nuclear Transfer Based on Uniform Design
基于均勻設(shè)計(jì)優(yōu)化延邊黃牛卵母細(xì)胞體外成熟及核移植后卵裂體系
a fabric of uneven yarn that has an uneven knobby effect.
由不均勻的紗線制成的有不均勻的解的纖維制品。
Whip the ingredients (up) into a smooth paste.
把配料攪打成均勻的糊狀。
Whip the ingredients into a smooth paste.
把配料攪打成均勻的糊狀.
inhomogeneity of chemical composition in the solar nebula
太陽星云化學(xué)成分不均勻性
Quickly increase temperature more uniform temperature in hearth, in hearht, higher pass-rate of production.
升溫快，爐膛內(nèi)溫度均勻，產(chǎn)品成品率高。
The wire spring was evenly coiled.
這根金屬絲彈簧是均勻盤繞成的。
Mohr-style pipets are made from glass tubing of uniform bore. Mohr
型移液管由孔徑均勻的玻璃管制成。
The research of uniform circular array MVDR beamforming algorithm
均勻圓陣MVDR波束形成算法研究
Correction of imaging non-uniformity for multi-TDICCD mosaic camera
多TDI-CCD拼接相機(jī)成像非均勻性的校正
Generation Algorithm of Skewed Hilbert Curve
非均勻Hilbert曲線的生成算法
Generating test data of Web service based on uniform design method
用均勻設(shè)計(jì)法生成Web服務(wù)的測試數(shù)據(jù)
Synthesis and Non-uniformity Correction of TDI-CCD Multi-tap's Imaging
TDI-CCD多抽頭圖像合成及非均勻性校正