The optimum chemical composition and heat treatment process of multi-element low alloys high Cr-Mn white cast iron have been determined.
确定了多元低合金高铬锰白口铸铁的最佳成分和热处理工艺。
The effect of copper on the corrosion resistance of Cr-Mn stainless steel in H2SO4 was analyzed by means of weight-loss method, electrochemical polarization curves, SEM, EDS and XRD.
采用失重法、电化学极化曲线法、SEM、EDS、XRD等分析手段，分析了铜对铬锰不锈钢耐蚀性的影响及其机制。
The method of measuring c, s, p, Mn, Si, Cr, Ni, Mo, V, W, ti, Nb, Al element content by DV-4 photoelectric spectroscope on one condition is introduced.
介绍了应用DV - 4光电光谱仪，仅用一种测定条件，测定高合金钢中碳、硫、磷、锰、硅、铬、镍、钼、钒、钨、钛、铌、铝元素的含量的方法。
The effects of niobium on breaking toughness and wear - resistance of high Cr - Mn white iron was investigated.
研究了铌对高铬锰白口铸铁断裂韧度和耐磨性的影响规律。
Hot-process phosphoric acid contains a little impurities which are mainly Pb and very little Zn, Cu, Ni, Mn, Cr and Cd.
热法磷酸中含有少量重金属杂质，主要是铅以及微量的锌、铜、镍、锰、铬和镉等。
The content of Cr, Mn, Zn, Cu, Fe, Mg, ca in the cancer tissue and its peripheral tissue from 38 cases with large intestine carcinoma was determined by atomic absorption spectrometer.
用原子吸收光谱法测定了38例大肠癌组织及其边缘组织中铬、锰、锌、铁、镁、钙、铜的含量。
As a practical use of this kind of combination, the smelting reduction processes of Mn and Cr are also discussed briefly.
作为组合工艺应用，概要论述了锰和铬的熔融还原。
Trace elements as Mn, Cr, Ni and V trend towards increases from shallow to deep water sedimentary settings, thus could be used to indicate relatively changes of paleo-water depth.
等元素的含量从浅水到深水总体呈增加之势，因此可以指示古水深的变化。
The results of distribution for As and Ni increased from center to edge. Also is the Cr, but relatively invisible. The distribution of Mn is relationally homogeneous.
结果表明砷、镍的分布呈中心低、周围高的趋势，铬虽也有中心低、周围高的趋势但相对不很明显，锰的分布则比较均匀。
In the determination of Cr, Ni, cu and Mn in alloy steel samples by flame AAS, the precise results are difficult to obtain because of the matrix-element fe interference.
火焰原子吸收法(即aas法)测量钢样中铬、镍、铜、锰的含量，由于基体中大量存在铁元素的干扰。
A method for the joint determination of si, p, Mn, Cr in general and low alloy steels is discussed by means of spectrophotometry. The method is simple, rapid and easy to master.
探讨了采用分光光度法对普通钢、低合金钢中的硅、磷、锰、铬进行联合测定。
Said formula USES Cr, mo, Mn and W as main effective components and adds proper amount of graphite.
该配方以铬、钼、锰、钨为主要有效成分并加入了适量的石墨。
Said formula USES Cr, mo, Mn and W as main effective components and adds proper amount of graphite.
该配方以铬、钼、锰、钨为主要有效成分并加入了适量的石墨。
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