还原

The ratios of k~1 and k~2 varied within the range of 4.24～133, which showed that the control step for oxidation of CO over REFeO~3 was the reoxidation step of reduced catalyst.

催化剂用CO还原的速率常数k~1比还原了的催化化剂用O~2再氧化速率常数k~2要大， k~1/k~2值在4.22～133之间，这说明在REFeO~3上CO氧化的控制步骤为还原催化剂的再氧化。

Thus, SRB were likely to reduce sulfates to sulfides simultaneously with petroleum oxidization, and directly or indirectly reduce hexavalent uranium U to tetravalent uranium U to precipitate pitchblende.

于是，利用烃类作为生存的碳源，硫酸盐还原菌将硫酸盐还原的同时，直接或间接地把六价铀U还原成四价铀U，导致沥青铀矿形成。

The basic data obtained from the experimental research were calculated and disposed with computer and concluded an important principle of Li〓O by silicon thermoreduction. The factors affected the reduction such as temperature, pressure and time were dicribed by methematical equations. The relation ships of reduction rate with temperature, pressure and time were directly expressed by three-dimension figures. The relating mathematical equations described the process derived from research were proved to be coincided with the practice. Therefore, the obtained results were accurate and reliable and of important value.

运用计算机对试验研究得到的基本数据进行计算和处理，得到了氧化锂硅热还原的重要规律；用数学方程描述了温度、压力和时间还原的影响；用三维立体图直观地表现了温度、压力和时间〓与还原率的关系；研究得到的描述过程的有关数学方程，经验证与实际相符，因此得到的结果准确可靠。

Keeping balncc of oxidation-reduction equation is a difficult problem in the chemical teaching, especially in high school. The author induced from a great wany materials a new mcthod, namely,"grasp one molecule", which is readily accepted by strdents.

氧化——还原方程式的配平是化学教学中的难题，特别在高中化学中，学生尤感困难，本文是作者从自身氧化还原反应，有单质参加和有单质生成的氧化还原反应诸方面归纳出一种学生易于接受的方法即&抓1分子法&。

The results show that Fe0.13[Co20Ni80]0.87 alloy fibers are characterized with thin diameters between 0.3 and 2.0 μm, with high aspect ratio, dense and smooth surfaces. The crystalline size of the alloy fibers are mainly influenced by the thermal reduction temperature and are in the range of 20 to 50 nm with a corresponding reduction temperature range of 300 to 700 ℃. The magnetic properties of the alloy fibers are largely affected by the carbon content and crystalline sizes of the alloy fibers. With increasing thermal reduction temperature, the coercivity decreases while the saturation magnetisation value of the alloy fibers dramatically increases at lower reduction temperatures. The alloy fibers prepared at reduction temperature of 700 ℃ have a saturation magnetisation value of 120 Am2/kg and a coercivity value of 10.4 kA/m, respectively.

结果表明：Fe0.13[Co20Ni80]0.87合金纤维的直径为0.3~2.0 μm，表面光滑、长径比大；组成合金纤维的晶粒大小与还原温度密切相关，当温度为300~700 ℃时，晶粒尺寸由约20 nm增加到约50 nm；该合金纤维显铁磁性，其矫顽力主要受合金中C含量及晶粒大小的影响，随制备温度的升高而降低；饱和磁化强度则主要与合金的组分相关，随还原温度的升高和合金纯度的提高而增大；经700 ℃热还原后，合金纤维的饱和磁化强度 m s为120 Am2/kg，矫顽力 H c为10.4 kA/m。

Taller three oxidates wolfram of test first of all by means of calcines APT''s system is get pureness ,Afterwards separately after oxidate and reduction ,The wolfram restores to the wolfram powder through three oxidates ,The gains wolfram powder again oxidate is three oxidates wolfram ,Restore queen after twice oxidates ,The gains stuff pellet is more and more carefully ,Finally obtain sub－micron yardstick three oxidates wolfram .

实验首先通过煅烧APT制取了纯度较高的三氧化钨，然后分别经过氧化和还原，由三氧化钨还原为钨粉，所得钨粉再氧化为三氧化钨，经过两次氧化还原后，所得材料颗粒越来越细，最终得到亚微米尺度的三氧化钨。

Based on the results of thermodynamic analysis,iron ore was deoxidized by converter gas in different conditions with the temperature from 550℃to 700℃.

根据热力学分析结果，在550-700℃范围内选择相应条件进行转妒煤气还原铁矿石的实验，研究温度及时间对碳化铁生成率的影响，并论述二者对于还原、析碳的影响，探索利用转炉煤气还原铁矿石生产碳化铁的可行性。

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

This article reviews three kinds of methods for manufacture halogenated aromatic amine ,and the strong and weak points of the three reduction methods are pointed out.

本文综述了由卤代芳硝基物还原制备卤代芳胺的三种方法，并对几种还原方法的优缺点进行了对比和讨论，得出水合肼还原具有很好的应用前景。

The result shows: in 0~360 kg/hm^2 fertilizer can improve the plant height, dry matter accumulation of maize, nitrogen accumulation, root vigor, leaf nitrate reeducates activity, chlorophyll content and yield, meanwhile the leaves' nitrate reeducates activity, dry matter accumulation and the final output of wheat, root activity and other indicators were significantly correlated; Cultivating under the same conditions and dropping the fertilizer amount from 360 kg/hm^2 to 315 kg/hm^2, the dry matter accumulation will be increased, the roots vigor and leaf nitrate reeducates activity will be strengthened, but the yield are not obviously different in the same treatment.

结果表明：在0~360kg/hm^2的施肥范围内，肥料能显著增加玉米植株的株高、干物质积累盆、叶绿素含量和籽粒产量，提高根系活力、叶片硝酸还原酶活性；同时硝酸还原酶活性、干物质积累量、根系活力和叶绿素含量等指标与玉米最终产量呈显著正相关；在相同的栽培条件下，将施肥量从360kg/hm^2降至315kg/hm^2，植株的于物质积累量增加、根系活力、叶片硝酸还原酶活性增强，但处理间籽粒产量无显著差异。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。