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The valence electron structure of medium chrome cast iron matrix is set up and the effect of Si on medium-temperature phase transformation is analyzed by using empirical electron theory of solids and molecules.

此文建立了290Cr8Si2中铬铸铁基体的价电子结构，运用固体与分子经验电子理论分析了中铬铸铁中Si对铸铁中温相变的影响，分析和实验结果表明，290Cr8Si2中铬铸铁基体含C、Cr、Si的-γFe晶胞中，C原子与Si原子的结合力强于C原子与Cr原子的结合力，中铬铸铁中较高的含Si量降低了铸铁基体的含Cr量，进而降低了中铬铸铁的淬透性。

The high exhaustion chrome tanning mechanism of ECPA auxiliary was explored by means of investigating the interaction among the auxiliary,collagen and the chrome tanning agent.

通过研究大分子铬鞣助剂ECPA与皮胶原、铬鞣剂间相互作用以及ECPA助鞣的革坯铬结合牢度，探讨了ECPA的高吸收铬鞣机理。

Influence of the concentration of Cr in the leachate and quantity of Pb(CH3COO)2 of Pb(NO3)2 on the reaction of synthesizing yellow chrome was also studied. Finally, according to the criterion and standard method in GB3184-82, some yellow chrome synthesized in the experiments was sampled and the concentration of PbCrO4 in these samples was determined. The following conclusion can be drawn from these experiments.

根据中华人民共和国国家标准GB3184-82中的规定铅铬黄颜料的技术质量指标和检测方法，测定了铬黄样品中铬酸铅含量的厂迄回【、矾士牢位论父泅仰yW盯皿'S川mS达标情况，结论如下：门）反应中重铬酸盐的浓度并不需要达到前人所提出的150～2509·L'的范围，在一定条件下低于此浓度时对铬黄生成反应并无不利影响。

Potassium dichromate K 2 Cr 2 O 7 or ammonium dichromate (NH 4 ) 2 Cr 2 O 7 for AN based mixtures.

重铬酸钾钾铬2 O的7或铵重铬酸钾（信息NH 4 ） 2铬2 O的七月为一基于混合物。

The experimental results indicate that the treatment process of copper alloy using benzotriazole can improve the corrosion resistance greatly.

目前常采用的是铬酐及重铬酸盐的钝化处理工艺，虽然效果比较好，但由于铬化处理过程中的铬离子对人体和环境的污染严重，因此研究针对不同使用环境的、良好的无铬钝化工艺具有很大的现实意义。

The amount of Ni and Cr released from specimens coated with gold was much fewer than those from unplated specimens (P .05), which meant the stability of Ni-Cr alloy on the surface was improved. The biocompatibilities of gold-coated Ni-Cr alloy were better than the uncoated alloy, though there was no difference in biological ranking.

说明其耐电化学腐蚀能力明显提高；镀金后镍铬合金试件的镍离子、铬离子析出量降低，表面稳定性有了显著性提高；无氰镀金法镀金的镍铬合金生物相容性良好，从数据上比较优于未镀金镍铬合金，但生物学评级上无显著性差异。

The amount of Cr_2O_3 in a magnesite-chrome brick affects on slage corrosion resistance when the brick is heated and volatilized.

研究TH法用镁铬砖中不氧化铬含珠镁铬砖的高温挥发失重对镁铬砖抗渣侵性能的影响。

Their products involved in the production of chlorination of rutile titanium dioxide; a variety of phthalocyanine blue and green series; temperature chrome yellow series; lightfastness heat of lead chrome yellow series (Medium chrome yellow, lemon yellow, light yellow, dark yellow, chromium molybdenum red); Permanent Red F4R, light red; organic yellow pulp series, as well as aluminum and other high-color, mid-range color and thermal modeling of solid acrylic resin.

其产品涉及氯化法生产的金红石型钛白粉；各种酞菁蓝、绿系列；耐高温铬黄系列；耐光耐热铅铬黄系列（中铬黄、柠檬黄、浅黄、深黄、钼铬红）；永固红F4R，耐晒红；有机黄系列以及铝浆等各种色系的高，中档颜料和热塑型固体丙烯酸树脂。

The principle of dechromation consists in sorption of chrome from spent liquor to chrome sludge and is characterized by very high efficiency, simplicity and low investment requirements.

去铬要求废液中的铬吸附在铬泥上，这种处理方法高效、简单，投资少，并且去铬液对环境的危害也小得多。

The reduction of the chromium oxide particles within the iron matrix is affected by factors that include the diffusion of the reduced chromiu....

铬主要以两种价态稳定的存在於自然界中，分别是三价铬以及六价铬，六价铬被认为是具有较强的生物毒性。

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％。