杂质

The mechanism of carbonization process of aluminate solution was analyzed thermodynamically. The results show that the internal reason of precipitation of Al3 in the process is its spontaneous nucleation caused by supersaturation of aluminate solution. The behaviors of SiO2 in the process are in accordance with that from published experiment, which implies that the content of product SiO2 from carbonization depends on its solubility but is not the result of absorption. The thermodynamic calculation for forming Na2O·Al2O3·2CO2· n H2O was achieved.

摘 要：为对高浓度铝酸钠溶液碳酸化分解过程中产品杂质含量的控制提供理论依据，分析了铝酸钠溶液碳酸化分解过程的热力学，认为该过程中Al3析出的真正机理是过饱和铝酸钠溶液的自发结晶；而基于分解过程中平衡浓度的热力学计算表明，在碳酸化分解过程中SiO2的变化规律与公认的三段变化规律一致，说明该过程产品中SiO2的含量取决于它在溶液中的平衡浓度，而非吸附所致；同时还分析了丝钠铝石的形成热力学。

With the aid of scanning electron microscope, the experiment was made about how the filter of deposition chamber influences the content of impurity in film and the result of this test showed that the structure, number of filter spacer strongly influences the impurity content of film.

在扫描电镜下观察了沉积腔的过滤对薄膜杂质含量的影响，观察结果表明：过滤挡块的数量、结构对过滤宏观粒子的效率具有很大的关系，当弧形腔中复合挡块数量4块时，在扫描电镜已很难发现有宏观粒子。

Flexo business card printing and membership card check ink roller, Internet point, water-based ink to be increased in the bucket, in case the filter impurities such as damaged roller.

柔性版制卡和会员卡制作用网纹辊传墨，网穴较小，水性油墨桶中要加过滤网，以防杂质等损坏网纹辊。

It is essential that the water be as nearly chemically pure as. Is commercially feasible , since traces of impurities react with other constituents of the drink.

由于水中的痕量杂质会与饮料中的其它成分发生反应，因此对水进行化学提纯是必要的，从商业角度看这也是可行的。

Compare to sodium hypochlorite and hydrogen peroxide, chlorine dioxide can remove the impurity in fabric without reduction of its strength and production of severer water pollution, and hence, it is a short processing method for pure cotton fabrics and is worth to be studied and applied.

与次氯酸钠和双氧水相比，二氧化氯不仅能有效降解织物中的杂质，而且不会降低织物强力，也不会造成水体的严重污染，是一种值得研究和推广的短流程纯棉织物前处理方法。

The soluble greases, proteins and impurities in used chrome liquor can be effectively eliminated with a high molecular polyester PS.

用高分子聚酯PS药剂，能有效地除去铬鞣废液中可溶性油脂、蛋白质和其他杂质。

For the low-carbon steel, the chromium is an occasional impurities.

对于低碳钢来说，铬便是一种偶然的杂质。

Therefore, the nickel impurity in the chromium-plating bath was determined using spectrophotometry, which was based on the reaction between nickel ions and diacetyldioxime, generating a red complex, in the presence of alkali and ammonium per-sulfate. The measurement was carried out in 3cm color-matching cells at a wavelength of 510nm, using the sample without chromogenic agent as the reference.

在碱性和过硫酸铵存在的条件下，镍离子与丁二酮肟生成水红色配合物，利用这一特性，以丁二酮肟光度法测定镀铬溶液中镍杂质的含量，以不加显色剂的试样作参比液，用3cm比色皿，在波长510nm处测定。

For considering the electron-phonon coupling in the problem of impurity absorption band, a set of normal modes of lattice vibration were formed by the linear combination of plane waves in order to present fully the site symmetry of the impurity.

将晶格振动的平面波线性组合得到一组充分反映杂质格位对称性的正则模。

Experimental and practical researches of impurity distribution activities and common effect, and analysis on the removing and distribution activity of the impurities in the Guixi Smelter anode copper like As Sb and Bi and the forming structure and conditions of the flotating anode slime have been done.

很久以来，许多从事冶金或相关专业的研究人员，对As、Sb、Bi、Pb等杂质在铜电解精炼过程中的行为进行了多项研究，如对存在形态和行为、阳极泥的形成机理，以及对阴极铜质量的影响进行了一系列的探索研究，并取得了可喜的科研成果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。