查询词典 graphite

RKF Standard grade for turning, drilling, milling, reaming, countersinking of hardened steels, white and grey cast iron light metals, plastics and synthetic materials, Al-Si-Mn-Cu-alloys, glass, ceramics, graphite.

对硬钢、白铸铁、灰铸铁、轻金属、塑料、合成材料、铝-硅-锰-铜合金、玻璃、陶器、石墨等进行车削、钻孔、铣削、铰孔、穿孔等加工的标准牌号。

MgO-C brick has a good erosion resistance but Al〓O〓-C brick is better. Corrosion mechanism for refractory without carbon is that FeO and oxides of molten slag take place chemical reaction with constituents of refractory and forming low fusing point compounds to be dissolved in molten slag. For those refractory containing graphite carbon is to be decarburized in advance and to form decarburizing layer and metamorphosis layer. The subsequent corrosion is decarburizing and taking chemical reaction to form low fusing point compounds and dissolved in molten slag at the same time.

铁浴中硅和钛的扩散是影响铁浴及熔渣与耐火材料作用的重要因素，耐火材料中添加的TiO〓和SiC受熔渣氧化和侵蚀，将被部分还原形成Si，Ti向铁浴中扩散，Si、Ti在铁浴中的扩散研究结果是： D〓=1.84×10〓exp（－5988.7/T） cm〓/S E〓=49766 J/mol D〓=7.76×10〓exp（－53225.5/T） cm〓/S E〓=442304 J/mol 铁浴式熔融还原熔体对粘土砖，高铝砖，镁砖的侵蚀速度很高，镁碳砖抗侵蚀能力比前几种耐火材料强，但不如铝碳砖；对不含碳耐火材料在熔体中的侵蚀是熔渣中FeO及其它氧化物与耐火材料组分的化学反应形成低熔点物熔蚀进入渣相，产生损毁。

The structure changing feature of refractory in corrosion process is that there are decarburizing layer and metamorphorsis layer. In order to increase the resistance to melt for refractory containing graphite carbon, the forming rate of decarburizing layer and metamorphorsis layer must be controlled efficiently.

在耐火材料表面存在一层渣膜，它的组成既不同于熔体，也不同于耐火材料组分，而是富集耐火材料中的某些组分的液态渣膜，它的组成和性质控制着耐火材料的侵蚀速度。

As the concentration of FeO increasing, the rate of decarburizing and reaction-dissolving of refractory rises sharply. Meanwhile gas production rate of reduction reaction is increased and motion and foaming of molten slag are also speeded up. The corrosion feature of refractory containing graphite carbon is that the most severity area is slag level (interface of slag-gas phas -refractory) and slag-metal interface comes second, and the lowest corrosion rate is the area of iron-bath.

熔体的组成、温度及熔体与耐火材料间的相对运动对耐火材料的侵蚀产生着很大影响，而熔渣中FeO浓度是最主要的因素，FeO浓度提高，使耐火材料脱碳和反应熔蚀速度呈直线上升，熔体中还原产生气体量增加，熔体涨泡及运动速度提高，这些作用都加快了熔体对耐火材料的侵蚀。

There are also delocalized states with atomic orbital character in C_(60) found in experiments,they can be related to NFE states in graphite.

实验和理论也发现C_(60)体系中具有原子轨道特征的态，它们可能和石墨中近自由电子态有相同来源。

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

Based on theoretical analysis on the causes of sealing failure in cover flange of HU871 melt heat media exchange, the resolving measure was presented, according to which the originally used asbestos cover flange sealing gasket was replaced by basie type metai flexible graphite enwinding gasket.

在对HU871熔体热媒热交换器封头法兰密封失效原因进行理论分析的基础上，提出了解决该问题的方法；将原来的石棉封头法兰密封垫片改为基本型金属柔性石墨缠绕垫片。

Exfoliated Graphite is a kind of new porous carbon-based adsorption material.

膨胀石墨是一种新型的多孔碳质吸附材料。

Through the heat and chemical treatment, the content of C-O and C=O functional groups on the graphite felts surface was increased, resulting the increase of the reaction activity of vanadium redox.

通过化学处理和热处理工艺，改善了表面特性，提高了C—O和C=O基团的含量，增加了电极反应的活性区，降低电极反应的活化过电位。

The adsorption properties, wetting ability and electrochemical impedance spectrum properties of graphite felts in vanadium electrolyte were investigated.

研究了不同氧化程度下的石墨毡在钒溶液中的吸附性、润湿性及其交流阻抗图谱，结果发现随着氧化程度增加，吸附性和润湿性增强；交流阻抗谱包括两个半圆和一条直线，高频半圆对应离子的吸脱附反应，低频半圆对应电化学反应，直线对应离子在溶液中的扩散过程。

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％。