查询词典 chromium

In the spectrochemical analysis of high chromium steels, the calibration curve of chromium wasfound to be affected by the difference in carbon content and the microstructure of the samples.

在进行高铬钢光谱分析时，观察到不同含碳量对铬钢的工作曲线有影响。同时看到在高碳样品中，样品组织结构也影响了光谱分析的结果。

The results of calculation will be fundmentally consistent with the experimental values.In addition, we calculated dibenzene chromium and its derivatives, ferroceneand its derivatives. The former had higher symmetry. We studied the substituenteffects by calculating their NMR spectra. The results show that: when we add asubstitute group on one ring of dibenzene chromium, the substitute group will affecttwo benzene rings. The effect is similar to the effect of branched alkanes, namely:the effect on neighbouring groups has transmissibility. Furthermore, the nearer theneighbouring group is, the stronger the effect is. This effect is observed not only onthe substituted ring, but also on the unsubstituted ring.

此外，我们重点计算了二苯铬及其衍生物和二茂铁及其衍生物的核磁共振谱，其中二苯铬及其衍生物选择的是对称性较好的体系，通过计算其核磁共振四川师范大学硕士学位论文谱，探讨其取代基效应，结果表明：在二苯铬的一个环上引入取代基后，取代基对两个苯环的影响，类似于支链院烃引入取代基后的影响：即对邻近基团的影响有传递性，并且对离得近的作用强，对离得远的作用弱，这种作用不仅体现在连有取代基的环上，也体现在没有带取代基的环上。

While chromium may stably exist in either the passive or active state, small amoullt additioll of palladium significantly increases the corrosion resistance of chromium plating in deaerated 5% and 20% sulfuric acid solutions in consequence of spontaneous passivation.

极化曲线和阻抗频谱测定表明，在相应铬镀层处于活化－钝化过渡的电位区间，含钯镀层都表现出净阴极电流；活化溶解与钝化过程随电位的相对发展变化可由低频段容抗圈的演变来推定。

The temperature rising of lignite and slag containing chromium under microwave irradiation, and the detoxicated influences of slag containing chromium by using lignite as reducer were studied.

用褐煤作还原剂还原含铬废渣中Cr6+，考察了褐煤以及铬渣在微波场中的升温行为，研究了铬渣解毒的影响因素。

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

The hardness of HSS roll was over 66 HRC, the depth of hardened layer excesses 30 mm, the variation of hardness in the roll surface was smaller than 1.5 HRC, and the wear resistance of HSS roll was better than that of high chromium cast iron roll and high nickel chromium indefinite hilled cast iron roll, close to that of powder metallurgy hard alloy roll.

研制出的高速钢轧辊硬度超过66HRC，淬硬层深度超过30mm，辊面硬度差小于1.5HRC，耐磨性优于高铬铸铁和高镍铬无限冷硬铸铁轧辊，接近硬质合金轧辊。

Using this method, it is shown that the chromium-depleted zone consists of layersof continuously varying chromium contents and passivating properties.

在不同电位下测定J-t曲线并对所得溶液进行分析的结果表明，贫Cr层是由贫Cr程度不等的连续区域组成的。

A novel determination method of trace chromium in waste water by dual-wavelength spectrophotometry was established based on the fact that chromium can react with alizarin blue S to form red complex in H2SO4 medium.

在H2SO4介质中，铬与茜素蓝S形成红色产物，据此建立了双波长分光光度法测定废水中痕量铬的新方法。

This text through to various treatment include chromium, last cyanogens and alkali waste water craft comparison of the method sour, treatment craft of choosing economy to be effective separately; Adopt alkaline chlorine France punish, include cyanogens waste water, chemistry reduce, take place, deal with, include chromium waste water, in handle course among to waste water sour alkaline go on regulate, design one small-scale sewage treatment plant, demand to reach second in world and handle the standard.

本文通过对各种处理含铬、含氰及酸碱废水工艺方法的比较，分别选择经济有效的处理工艺；采用碱性氯化法处理含氰废水，化学还原发处理含铬废水，在处理过程中对废水的酸碱性进行调节，并设计一座小型的污水处理厂，要求达到国际二级处理标准。

Objective To explore the influence of concentration and addition method of chromium ion during fermentation of chromium-rich beer yeast.

目的 优化富铬啤酒酵母发酵过程中Cr(上标 3+)浓度及加入方法。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。