查询词典 vanadium

The result showed that the contents of sulfur, nickel and vanadium in the resid had different effects on cracked naphtha quality, in which sulfur content was the main factor affecting its stability and corrosion behavior.

结果表明，催化裂化原料中的硫、镍、钒含量及残炭对催化裂化的反应产物有不同的影响，其中硫含量是影响催化裂化精制汽油腐蚀性、安定性的主要因素。

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。

An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone when welded, having a tensile strength greater than 830 MPa (120 ksi) and a micro-laminate microstructure comprising austenite film layers and fine-grained martensite/lower bainite laths, is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum, and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; finish rolling the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature; stopping the quenching; and either, for a period of time, holding the plate substantially isothermally at the QST or slow-cooling the plate before air cooling, or simply air cooling the plate to ambient temperature.

在基体板以及焊接时的热影响区处的低温韧性优异的超高强度、可焊接、低合金钢具有高于830MPa（120ksi）的抗拉强度，并且具有包含奥氏体薄膜层和细晶粒的马氏体／下贝氏体板条的显微层状组织，所述钢的制备过程为：加热含有铁以及特定重量百分比的添加元素的钢坯，所述添加元素为碳，锰，镍，氮，铜，铬，钼，硅，铌，钒，钛，铝，以及硼中的一些或全部；在奥氏体可发生再结晶的温度范围内，采用一个或多个道次，将所述钢坯轧制成板材；在低于奥氏体再结晶温度但高于Ar 3 转变点的温度下，采用一个或多个道次对所述板材进行终轧；将所述终轧板材淬火至一适当淬火终止温度；停止所述淬火；或者在空冷前在QST点基本等温保持所述板材一段时间，或者对所述板材进行缓慢冷却，或者只是简单地将所述板材空冷至室温。

After being leached with water,it is releached with 1%sulphuric acid,the leaching rate of vanadium can be increased by 10%.

采用1%的硫酸作为浸出剂对水浸渣进行再浸出，钒的浸出率可提高10%，最高可提高40%～50%。

When molten vanadium pentoxide is present, it acts as a catalyst to change the SO2 in the presence of excess air to the more objectionable sulfur trioxide (SO3) which then combines with moisture to form sulfuric acid .

ATOM-IX-950有效的抑制这样的反应，它通过改善燃烧能力来减少过量空气以改变二氧化硫和三氧化硫的比例，这样也有助于降低排气温度和降低燃料的消耗。

Traditional method is the fundamental method of V - P - O catalyst preparation; Aerosol Precessing is a method of fast catalyst preparation; Flame Deposition Technique is one of method of preparing nanostructured Vanadium phosphorus Oxide.

但不同的制备方法对催化剂晶粒大小、晶型、比表面和耐磨程度影响较大。在v—P～O催化剂的研制过程中，人们对V—P—O催化剂的不同制备方法也进行了研究，以期合成反应性能更好的催化剂。

The chloroform solution of PMNHA extracts vanadium rapidly from 2.25―4.50mol/L hydrochloric acid solutions as a violet complex. The absorption maxmium of the violet complex is at 540nm. Many diverse ions, especially considerable quantity of Ti ions do not interfere with the determination of V.

该试剂的三氯甲烷溶液能很快从2.25―4.50mol/L HCl中萃取钒的紫色配合物，其配合物最大吸收在540nm，很多外来离子，特别是大量的钛不干扰钒的测定，钒含量在0―28μg？

For example, use the diamond grinding tool to process the hard alloy as well as the ceramics, the agate, the optical glass, the semiconducting material, the stone material, the concretes and so on nonmetallic material and the non-ferrous metal and so on; use the cubic boron nitride grinding tool to Process the tool steel, the molding tool steel, the stainless steel, the heat-resisting alloy and so on, especially to processes high vanadium high-speed steel, may obtain satisfied processing effect.

例如，用金刚石磨具加工硬质合金以及陶瓷、玛瑙、光学玻璃、半导体材料、石材、混凝土等非金属材料和有色金属等；用立方氮化硼磨具加工工具钢、模具钢、不锈钢、耐热合金等，特别是加工高钒高速钢等黑色金属，均可获得满意的加工效果。

The mechanism of vanadium removal from ammonium molybdate solution by ion-exchange was studied. It is found that V and Mo existing in ammonium molybdate solution are in the forms of V3O(superscript 2- subscript 9) and MoO4(superscript 2-), respectively, when V2O5 concentration is about 0.5g/L and the p!

对钼酸盐溶液离子交换钼钒分离机理进行研究研究结果表明，在钼酸盐溶液中V2O5含量约为0.5g/L，钒与钼在pH值为6.5~8.5的范围内分别以V3O(上标 3-下标 9)和MoO(上标 2-下标 4)的形态存在。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。