不能溶解地
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The dissolving behavior of iron in bauxite under high temperature and high pressure in vitriol solution was studied.
研究了高温高压条件下铝土矿中铁在硫酸介质中的溶解行为,结果表明:在一定的温度条件下,铝土矿的赤褐铁矿能较好地溶于硫酸溶液中,而铝土矿中含铝矿物的性质不发生变化,从而为铝土矿的进一步加工利用提供了条件。
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Practically insoluble in water; soluble 1 in 50 in alcohol, 1 in 50 in chloroform; slightly soluble in ether.
几乎不能溶解在水中;可溶物1 在50 在酒精里, 1 在50 在三氯甲烷里;轻微地可溶解在以乙醚里。
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Through the experiments on hydration of AH in the following sulphate(Li_2SO_4、MgSO_4 、 Al_2(SO_4)_3 、MnSO_4 、CuSO_4 、CoSO4 、CdSO_4 、ZnSO_4 、NiSO_4 、FeSO_4), dissoluble sulfate hydrate origining from hydration process of AH affects it's hydrous rate, hydrous rate of AH does not connect with Z/R of cation in stimulation, theory that Z/R affect hydrous rate of AH does not exist. Third, hydration of AH in dissoluble sulfate complies with dissolve-nucleate -grow theory, concentration of Ca~2+ from dissolving of CaSO_4 is higher than one of CaSO_4·2H_2O, calcium sulphate dihydrite gets a motivity of crystallization. dissoluble sulfate takes the following function: double-salt or dissoluble sulfate hydrate from hydration of AH in it becomes heterogeneous particle and a kind of nucleation catalyzer, and reduces surface barrier when DH becomes crystal because the crystal of DH precedently appears in uneven place. Results indicate hydration of AH does not conform with double-salt theory, but it conform with this mechanism: dissolve-nucleate-grow, formation of DH is an uneven nucleation and crystalizaion process.
通过对CaSO_4在Na_2SO_4 、K_2SO_4 、Rb_2SO_4 、Cs_2SO_4 、(NH_4)_2SO_4溶液中水化过程,以及CaSO_4·2H_2O、CaSO_4与以上硫酸盐反应速度、产物的研究,说明复盐理论不正确;CaSO_4在(Li_2SO_4、MgSO_4 、 Al_2(SO_4)_3 、MnSO_4 、CuSO_4 、CoSO_4 、CdSO_4 、ZnSO_4 、NiSO_4 、FeSO_4)溶液中水化,水化过程中硫酸盐水合物的析晶影响着无水硫酸钙水化,与激发剂阳离子Z/R值大小无关,阳离子的Z/R参数影响水化率的规律并不存在; 3、无水硫酸钙在可溶性硫酸盐中的水化按照溶解-成核-生长理论进行,CaSO_4达到溶解平衡时Ca~2+的浓度大于CaSO_4·2H_2O溶解平衡的Ca~2+的浓度,CaSO_4·2H_2O获得结晶的驱动力,可溶性硫酸盐起到形成晶核的作用:水化过程与CaSO_4生成复盐或析出水合物所形成的细小物相,作为异质微粒使母相中存在不均匀性,这些不均匀性有效地降低成核时的表面能位垒,使CaSO_4·2H_2O晶核优先地在这些具不均匀性的地方形成,因此这些物质起成核催化剂作用。
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At present,the rate laws and reaction mechanisms of pyrite oxidation,pyrite and chalcopyrite formation,uraninite and magnetite dissolution in aqueous solutions are mainly studied,and it is discovered that (1)oxidation rate of pyrite controlled by surface reaction assume fractional dependence on Fe3+ and O2 molalities in acid solutions;(2)Pyrite cannot nucleate directly from solutions below 300 ℃,it can only form initially through sulfidation of a FeS precursor. The rate equation of reaction between FeS and H2S to form pyrite is of the second order;(3)Chalcopyrite is formed by reactions of pyrrhotite or pyrite with Cu2+,the former proceeds via a series of mediate metastable phases of Cu-Fe sulfide,whereas the rate equation of the latter is apparently of the first order which is controlled by surface reaction;(4)The nonlinear behavior of magnetite dissolution at acid pH can be represented by a shrinking core model coupling with surface reaction and diffusion transport.
目前主要研究了水溶液中黄铁矿氧化、黄铁矿和黄铜矿形成、晶质铀矿和磁铁矿溶解的速率定律和反应机理,发现:(1)酸性溶液中黄铁矿的氧化速率对Fe3+和O2浓度呈分数依赖并受表面反应的控制;(2)低于300 ℃时黄铁矿不能从溶液中直接成核,而需初始地通过FeS先驱物的硫化生成,FeS与H2S反应形成黄铁矿的速率方程为二级;(3)磁黄铁矿或黄铁矿与Cu2+反应均可形成黄铜矿,前者经历了一系列准稳的Cu-Fe硫化物的中间物,后者的速率方程为表观一级并受表面反应的控制;(4)酸性pH时磁铁矿的非线性溶解行为可采用表面反应扩散输运耦合的收缩核模型来描述。
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The respondent has broken domn irretrievably and decreed that the said marriage be dissolved unless sufficient cause be shown to the cort winthin 6weeks from the making of this decree why such decree should not be made absolute.
应答者 已经不能挽回地打破 domn 而且法令被说的婚姻被溶解除非充份的因素被显示到来自这一条法令的成功因素的 cort winthin 6 weeks 为什么如此的法令不应该被做 absolute 。
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The nanoplex were smaller than the unmodified nHAP; thelipiodol/nanoplex emulsion, with the mean diameter at 75±11.8nm can disperse moreuniformly and be more soluble and stable, contrary to the unmodified nHAP and nanoplex Conclusion: Nanoplex/pDNA mass ratios greater than 15 had exhibited completepDNA absorption onto positive charged polyplex and pDNA protection from thedestruction of nucleinase in rabbit serum. Unmodified nHAP may can\'t induce effectivegene delivery.PartⅡThe construction of the recombint eukaryotic expressive vector ofwild-type human p53 and RbObjective: To construct the recombint eukaryotic expressive vector of wild-type humanp53 and Rb by utilizing the theory of molecular medicine.
结果nHAP颗粒本身大小小于100nm,但由于颗粒表面本身带负电,不能包括有效地结合及保护DNA;经Ca~(2+)修饰后,颗粒可带正电,可一定程度地结合和保护DNA,但聚合物本身的中性电与带负电的细胞膜结合,而且本身的颗粒则变地容易聚集而成为很大的颗粒,也不利于细胞的吞噬;经PLL修饰后,颗粒溶解性提高,直径变小,表面带正电,电泳结果显示PLL-nHAP颗粒可包括有效地结合和保护DNA免受兔血清的破坏,而且复合物表面的正电也包括有利于与细胞膜的结合与吞噬。
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The results show that Sb addition can diminish the crystal grain, but the content of segregative phase at crystal boundary increases, and the current efficiency of material is low. Compared with Sb addition, Sn addition can also diminish the crystal grain, the current efficiency increases, the content of segregative phase at crystal boundary reduces, but diffusional corrosion of the anode surface is not uniform. The cooperation of Sb and Sn can prevent Si from segregating effectively and enhance the current efficiency obviously. At the same time, anode materials have preferable surface dissolution characteristics.
结果表明: Sb具有细化晶粒的作用,但晶界存在较多偏析相,电流效率偏低;与Sb相比较, Sn也具有细化晶粒的作用,电流效率有所提高,晶界偏析相较少,但阳极的表面腐蚀溶解不均匀; Sn和Sb的协同作用在于能有效地抑制Si的偏析,显著提高阳极的电流效率,使得阳极表面具有良好的腐蚀溶解性。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。