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A series of experiments of chrome tanning of leather making using CO 2 Supercritical fluid technique were conducted.

利用自行设计制造的CO2 超临界流体装置实施铬鞣操作进行了探索性研究，运用正交实验法找到了在SCF -CO2 条件下实施铬鞣的最佳工艺条件为：浴温 40℃，压力 1 2MPa，时间 2 。5h ，粉状铬粉剂用量 6 %。

The results show that the shrinkage temperature of the leather tanned with QUIMITAN ABC is 101.4℃, and the physical-mechanical properties of QUIMITAN ABC tanning leather are better than that of chrome powder tanning leather; the content of Cr2O3 (0.4142 g/L) in the float of QUIMITAN ABC tanning is lower than that of the content of Cr2O3 (1.9481 g/L) chrome powder tanning, it's clear that QUIMITAN ABC tanning is good for Cleaner production; under the same content of chromic oxide, the physical properties of retanning leather with QUIMITAN ABC are better than that of retanning leather with chrome containing sytan and chrome powder, such as thichkening, flexibility, physical-mechanical properties.

结果表明：QUIMITAN ABC主鞣后的坯革的收缩温度为101.4℃，且其坯革物理力学性能高于用6%的铬粉主鞣后的坯革；QUIMITAN ABC主鞣后的废液Cr2O3含量(0.4142 g/L)明显低于用6%的铬粉主鞣后废液Cr2O3含量(1.9481 g/L)，用QUIMITAN ABC主鞣有益于清洁化生产；在Cr2O3含量相同的情况下，用QUIMITAN ABC复鞣的坯革在增厚率、柔软度、物理力学性能等方面都要好于含铬鞣剂及铬粉复鞣的坯革。

The results show that the addition of certain manganese in high chromium cast iron leads to a re-partitioning of alloy elements between austenite and carbide and a dropping in equilibrium phase transformation temperature although it's inappreciable for the influence of manganese on mass fractions of every phase in this cast iron. There is about 87 percent ledeburite under thermodynamic equilibrium condition and 23 to 32 percent M7C3 type carbide under thermodynamic non-equilibrium condition in the microstructure of 3C-l5Cr-4Mn-0.75Si system high chromium cast iron. Furthermore, the improvement of austenite stability and hardenability of manganese alloyed high chromium cast iron may been expected because there is a substitution between manganese and chromium that has been suggested by thermodynamic calculations.

结果表明，锰虽然对高铬铸铁中的各相数量影响不大，但一定数量的锰存在促使合金元素在奥氏体和碳化物两相中的重新分配，并降低平衡相的转变温度；在平衡条件下3C-15Cr-4Mn-0.75Si系高铬铸铁中菜氏体数量约占87%，而非平衡条件下M7C3型碳化物数量在23%-32%之间，且奥氏体中锰铬互替现象保证了奥氏体的稳定性和加锰高铬铸铁的淬透性。

The results show that the addition of certain manganese in high chromium cast iron leads to a re-partitioning of alloy elements between austenite and carbide and a dropping in equilibrium phase transformation temperature although it＇s inappreciable for the influence of manganese on mass fractions of every phase in this cast iron. There is about 87 percent ledeburite under thermodynamic equilibrium condition and 23 to 32 percent M7C3 type carbide under thermodynamic non-equilibrium condition in the microstructure of 3C-15Cr-4Mn-0.75Si system high chromium cast iron. Furthermore, the improvement of austenite stability and hardenability of manganese alloyed high chromium cast iron may been expected because there is a substitution between manganese and chromium that has been suggested by thermodynamic calculations.

结果表明，锰虽然对高铬铸铁中的各相数量影响不大，但一定数量的锰存在促使合金元素在奥氏体和碳化物两相中的重新分配，并降低平衡相的转变温度；在平衡条件下3C-15Cr-4Mn-0.75Si系高铬铸铁中莱氏体数量约占87％，而非平衡条件下M7C2型碳化物数量在23％～32％之间，且奥氏体中锰铬互替现象保证了奥氏体的稳定性和加锰高铬铸铁的淬透性。

In general, the chrome-included solution with the rain shows alkalescent, so it shows significant practical value to electrolyze and reduct Cr6+ in alkalescent media directly to dispose the extraction of chromium residues to disposal the chromium waste pollutant.

一般情况下，雨水淋淅出的含铬液体呈弱碱性，因此，直接在弱碱性介质中采用电解还原Cr~(6+)来处理铬渣浸出液，以治理铬渣污染具有实际意义。

Chromia-pillared zirconium phenylphosphonate and phosphate were prepared via preswelling the layered phosphates by ethylamine prior to the intercalation of the pillaring species.

采用乙胺预胶体化方法合成了一系列氧化铬层柱苯膦酸锆和氧化铬层柱磷酸锆催化剂，其铬含量达到22.5%-36.5%，比表面为316-462m^2/g，中孔孔容占总孔容的70%以上，孔径集中在2nm左右。

In order to solve chromium waste water by means of electrolyzed deoxidation, we apply polyacrylonitrile carbon blanket as pole, graphite as bipolar plate, positive ion film as diaphragm, to an oxidation-reduction system, in which negative pole electrolyzes and reduces chromium waste water; meanwhile, oxides Fe~{2+} into Fe~{3+} in positive pole.

为了电解还原处理含铬废水，以聚丙烯腈碳毡作电极，石墨板作双极板，以阳离子交换膜为隔膜，组装出氧化还原电池系统。此系统阴极电解还原处理含铬废水，同时阳极氧化Fe2+为Fe3+。电池系统的平均电流效率达92.29%，处理后废水中铬含量小于10-5mol/L，达到国家排放标准

However, in the business card printing and membership card in case of making paper out of the dirt and friction are suites-rolling up dew producing copper, dirt, diabetes'mellitus to marketizing to get rid of CR rolling dirt broken, you need to start from the dirty yellow amiodaron potassium in addition to, and then use special equipment electrized chromeplating, more time-consuming.

但在制卡和会员卡制息历程洋如逢纸弛掉下的砂粒摩擦，不常不兵版面铬层轧碎后露铜，爆发感脂上不净弊病，给打消镀铬层轧碎上不净出格便当，需不后用黄胺酸钾不兴不净，然后再用兼用摆设通电镀铬，较不省工夫。

The mechanical properties and microstructure of high-chromium cast iron containing 13% Cr were studied on the basis of experiments, and it was found that silicon and inoculations influenced the high-chromium cast iron with different microstructures in almost the same way.

在试验的基础上研究了含Cr13%的高铬铸铁的力学性能和组织特点，发现含硅量和变质处理对不同基体的高铬铸铁具有相似的影响规律；根据Fe-C-Cr三元相图对Cr13%高铬铸铁的凝固过程进行了分析，从一个新的角度揭示了铸造条件、含硅量和变质质处理对高铬铸铁性能和组织的影响机理。

Chromic dermatitis: A skin affliction resulting from attack on human tissues by salts of chromium and chromic acid.

铬毒皮肤炎：人体产皮肤组织被铬盐和铬酸感染而引致的皮肤病。

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％。