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The theoretical studies on a series of a-hydrogen shift reactions between the alkylidene and alkylidyne organometallic molybdenum complexes R^3R^4Mo(CHR^1R^2) and R^3R^4Mo(= CH2)(= CR^1R^2)were carried out with the density functional theory B3LYP method.

使用B3LYP方法研究了发生在有机化合物R^3R^4Mo(CHR^1R^2)和R^3R^4Mo(=CH2)(=CR^1R^2)之间的α-氢转移反应,探讨了R^1,R^2,R^3和R^4位置上不同取代基对α-氢转移反应势垒和产物稳定性的影响。

The investigation also showed that, the antioxidants with same action mechanism, for example, as both radical scavengers, phenol and amine antioxidants are synergistic; but the synergistic effects between two antioxidants with different action mechanism, such as radical scavenging phenol and amine antioxidants, and hydroperoxide decomposing ashless dithiocarbamate, are much stronger, and the heterosynergism between dithiocarbamate and alkylated diphenylamine is outstanding, which can serve as high temperature ashless high performance antioxidant combination; the heterosynergism among three antioxidants with three different action mechanisms, for example, the tri-component combination of alkylated diphenylamine, zinc dithiocarbamate and organic molybdate ester, can achieve excellent antioxidation performance.

研究还表明,具有相同抗氧机理的不同抗氧剂,如酚类和胺类抗氧剂,具有协同作用;不同作用机理的两抗氧剂之间,如自由基清除剂和氢过氧化物分解剂,具有更好的抗氧化协同效果,其中,无灰氨基甲酸酯与烷基化二苯胺抗氧剂具有最佳的抗氧协同效能,可成为高温无灰抗氧剂应用的一个很好选择;不同抗氧机理的三种抗氧剂复合,如烷基化二苯胺,氨基甲酸锌和有机酸酯组成的三元复合抗氧剂,具有更为优秀的抗氧化性能。

Oxidative coupling ,and synergistic combination with ashless thiocarbamate,zinc thiocarbamate,sulfur and phosphorusfree molybdate,non-active organic borate and organic alkali metal salt.

文章介绍了几种提高胺类抗氧剂抗氧化能力行之有效的方法:氧化偶合以及与硫代氨基甲酸酯、硫代氨基甲酸锌、非活性酸酯、非活性硼酸酯和碱金属盐添加剂协同。

The occurrence state and changing regularity of the Yuanshishan awaruite deposit,Qinghai Province;2. ore-body and ore-forming material occurrence state of three huge deposits in the mine field,the molybdenum ore-forming material origin and ore-forming mechanism were revealed.

河南省栾川县南泥湖矿田是我国位居世界前列的超大型矿田之一,通过对矿田内三个超大型矿床的矿床地质、矿体地质及成矿物质赋存状态的分析研究,揭示出的成矿物质来源和成矿机理,从而为进一步寻找同类型的矿资源提供了一系列实物资料。

Potassium, natrium determines it is good that use ion chooses electrode indirect method it is better also with indirect method to determine at calcium of direct way;, it is next occasionally phosphor of; of law of azotic arsenic Ⅲ determines use phosphor molybdic acid is ultraviolet law outcome is better it is better with result of law of personal candy kinase that; blood sugar determines; urea determines use Niao enzymatic ultraviolet anhydride of better; flesh uses rate law result enzymatic law outcome is better; albumin determines, it is vanadium acid next alkalescent phosphoric acid of oxidation law; is enzymatic determine outcome of fluid of use AMP amortize is better; amylase determines law of thing of enzymatic standard background and iodic colorimetric law coefficient of variation all bigger, former a bit small, latter of percent of pass is tallish, each lab can try to choose according to his condition.

结论钾、钠测定使用离子选择电极间接法好于直接法;钙测定用间接法也较好,其次是偶氮砷Ⅲ法;磷测定使用磷酸紫外法结果较好;血糖测定用己糖激酶法结果较好;尿素测定用脲酶紫外速率法结果较好;肌酐用酶法结果较好;白蛋白测定用溴甲酚绿法较好;胆红素测定用酶法结果好,其次是钒酸氧化法;碱性磷酸酶测定使用AMP缓冲液结果较好;淀粉酶测定酶法底物法和碘比色法变异系数均较大,前者稍小,合格率后者稍高,各实验室可根据自己的条件加以选用。

The disintergration of the Tekesi Daban batholith provides important constraints on the magmatic evolution of the Paleozoic granitic magmas and the related ore formation.

且具有不同的成矿专属性,并在新解体出的早石炭世浅成斑岩-玢岩组合中发现了良好的矿体,因而具有重要的研究和找矿意义。1区域地质概况特克斯达坂一带属

The oxidative desulfurization of model oil and straight-run diesel catalyzed by phosphomolybdic acid under traditional heating and microwave radiation was studied, with benzothiophene and dibenzothiophene dissolved respectively in n-octane as the model oil and the aqueous solution of H2O2 as the oxidant.

将苯并噻吩和二苯并噻吩分别溶于正辛烷配成模型油,以H2O2为氧化剂,研究普通加热和微波辐射加热下磷酸催化模型油和直馏柴油的氧化脱硫效果。

Discussed element of the matrix in alloy of nickel radical high temperature through the experiment, advocate quantity element if the chromium, cobalt, tungsten, molybdenum, Tantalum, niobium, rhenium spectrum to spectral line of boracic ultimate analysis violates a condition, use matrix to match a law to undertake to matrix interference corrective, fixed appropriate analytic spectral line.

通过试验探索了镍基高温合金中基体元素,主量元素如铬、钴、钨、、钽、铌、铼等对硼元素分析谱线的光谱干扰情况,采用基体匹配法对基体干扰进行校正,确定了合适的分析谱线。

In conclusion, the experimental method was easily performed, the reaction time was short and the products were gained in high yield. The bromination was controlled by the large molecular structure of ammonium methylbdate.

研究结果表明,实验方法操作简单易行,反应时间段短,产物专一性好,后处理简单,并且收率较高,活化溴原子对苯环的进攻位置主要受到催化剂酸大分子结构的控制。

In this paper, the main work has been focused on the rare reported arsenomolybdates, and nine novel compounds have been synthesized. Sandwich arsenomolybdates:(NH_4)_(12)[Cr_2AsMo_7O_(27_2]·11H_2O (1)(NH_4)_(14)[Cu_2AsMo_7O_(27_2]·13H_2O (2) Double sandwich arsenomolybdates:(NH_4)_(12)Cu(H_2O)_4[As_2Fe_6Mo_(22)O_(85)(H_2O)]·19H_2O (3)(NH_4)_(15)[As_2CoFe_5Mo_(22)O_(85)(H_2O)]·16H_2O(4)(NH_4)_(14)Mn_(0.5)[As_2Fe_5MnMo_(22)O_(85)(H_2O)]·22H_2O(5) Cagelike arsenomolybdate:(NH_4)_(11)[AgAs_2Mo_(16)O_(54)]·9H_2O (6) Organic-inorganic molybdenum arsenate complexes:CuAs_6Mo_6O_(30{[Cu_4]_3[CuAs_6Mo_6O_(30)]}_2·6H_2O (7),[Cu_2]_3[As_3Mo_3O_(15)]_2·2H_2O (8)(NH_4)_(10){Cu(H_2O)_4}[AsMo_6O_(21)(O_2CCH_3)_3]_2·12H_2O (9)All of the above polyoxomolybdates were characterized by IR spectroscopy, TG-DSC, elemental analysis, and single-crystal X-ray analysis to identify their structures and chemical compositions.

本文选择目前报道尚少的砷杂多化合物为研究重点,合成了不同结构类型的九个新的杂多化合物:单夹心化合物:(NH_4)_(12)[Cr_2AsMo_7O_(27_2]·11H_2O(1)(NH_4)_(14)[Cu_2AsMo-7O_(27_2]·13H_2O(2)双夹心化合物:(NH_4)_(12)Cu(H_2O)_4[As_2Fe_6Mo_(22)O_(85)(H_2O)]·19H_2O(3)(NH_4)_(15)[As_2CoFe_5Mo_(22)O_(85)(H_2O)]·16H_2O(4)(NH_4)_(14)Mn_(0.5)[As_2Fe_5MnMo_22_O_(85(来源:AbcccBC论文网www.abclunwen.comH_2O]·22H_2O(5)笼状结构化合物:(NH_4)_(11)[AgAs_2Mo_(15)O_(54)]·9H_2O(6)有机配体修饰的化合物:CuAs_6Mo_6O_(30{[Cu_4]_3[CuAs_6Mo_6O_(30)]}_2·6H_2O(7) [Cu_2]_3[As_3Mo_3O_(15)]_2·2H_2O(8)(NH_4)_(10){Cu(H_2O)_4}[AsMo_6O_(21)(O_2CCH_3)_3]_2·12H_2O(9)对上述新化合物进行了瓜光谱分析、元素分析、热分析和X-射线单晶衍射测试,确定了它们的组成和结构,对部分化合物还进行了UV-vis及荧光光谱分析和循环伏安表征。

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