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x-ray powder    
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  x射线粉末
    Based on studies on theoretical X-ray powder diffraction patterns obtained from structure data of 47 collected alkaline amphiboles and also on measured powedr patterns and crystallochemical site occupancies of 5 amphibole samples, empirical formulas were deduced after pluristic statistical analyses had been done to intensity ratios and canon site occupancies. Those formulas were then used to estimate linear models of canon site occupancies for new samples to be measured.
    对所收集的47个碱性闪石结构数据计算出理论X射线粉末图,同时实测出5个碱 性闪石样品的粉末图及其晶体化学占位,从这52个样品的X射线衍射圈中选出18条特征衍射 强度,将强度比值与各晶位各阳离子占位用多元统计分析统计出经验公式,以之作为估算未知 样品各阳离子占位的线性模型。
短句来源
  x射线粉
    X-ray powder diffraction data give the strongest lines: 4. 797(60),3.229 (100), 2. 368 (80 ), and 2. 169 (50).
    X射线粉晶衍射分析的主要谱线有:4.797(60),3.229(100),2.368(80),2.169(50)。
短句来源
    Nephrite cat's eye from Sichuan province and its mechanism of thermal transformation were discussed by differential thermal analysis (DTA), Fourier-transformation infrared absorption spectra (FTIR) and X-ray powder diffraction (XRD).
    用差热分析(DTA)、Fourier变换红外吸收光谱(FTIR)和X射线粉晶衍射(XRD)测试方法对四川软玉猫眼的热相变产物和相变机制进行了研究。
短句来源
    Raman spectrum and X-ray powder diffraction(XRD) were used to study the process and product of thermal transformation of nephrite cat's eye from Sichuan province.
    利用Raman光谱和X射线粉晶衍射谱(XRD)对四川软玉猫眼热相变的过程和最终产物进行了研究。
短句来源
    By means of X-ray powder diffraction and infrared spectrum analysis, it is proved thatthe main mineral composition of Luan Chuan nephrite is tremolite, and its every parameterswere very close to those of standard tremolite.
    运用 X 射线粉晶衍射和红外光谱对栾川的蛇纹石玉进行了分析,分析显示该地蛇纹石玉由较为纯净的叶蛇纹石组成。
短句来源
    Its physical properties, chemical composition and X-ray powder diffraction and infrared absorption spectra have been studied.
    本文对其物理性质、化学成分、X射线粉晶衍射和红外吸收光谱等方面进行了研究。
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  x-ray powder
X-ray powder diffraction results show that the as-grown SrWO4 single crystal belongs to tetragonal system and I41/a space group.
      
The structures of the CdSe quantum dots were determined by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM).
      
The thermal decomposition of CeO2 nanocrystalline precursor prepared by chemical precipitation method was investigated using thermo-gravimetric/differential scanning calorimetry (TG/DSC) and X-ray powder diffraction (XRD).
      
The sample was characterized by X-ray powder diffraction and transmission electron microscopy (TEM).
      
The changes in the physicochemical properties of MoO3 have been investigated using techniques such as X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and ultraviolet and visible spectroscopy (UV-vis).
      
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In this paper, mechanisms of the interaction of reagents with mineral surfaces have been investi-gated by means of microelectrophoresis apparatus, atomic adsorption spectrophotometer, ultra violetspectrophotometer and X-ray powder diffraction spectrometer. It is shown that the addition of com-bined reagent of sodium hydrogen sulfite and lime results in the formation of hydrophilic CaSO_3 andCaSO_4 etc. on the pentlandite, and decreases redox potential (Eh) in the pulp system, and acceleratesoxidation rate...

In this paper, mechanisms of the interaction of reagents with mineral surfaces have been investi-gated by means of microelectrophoresis apparatus, atomic adsorption spectrophotometer, ultra violetspectrophotometer and X-ray powder diffraction spectrometer. It is shown that the addition of com-bined reagent of sodium hydrogen sulfite and lime results in the formation of hydrophilic CaSO_3 andCaSO_4 etc. on the pentlandite, and decreases redox potential (Eh) in the pulp system, and acceleratesoxidation rate of the surface of pentlandite, therefore Fe(OH)_3 and Ni(OH)_2 are formed and thus pent-landite is deprassed strongly.

本文采用显微电泳仪、原子吸收光谱、紫外光谱吸收仪和X射线粉晶衍射仪研究了药剂与矿物表面的作用机理。证明亚硫酸氢钠和石灰组合剂作用后,在镍黄铁矿表面形成了CaSO_3和CaSO_4等亲水性产物,同时降低了矿浆体系的氧化还原电位(Eh),加快了镍黄铁矿表面氧化速度,生成了Fe(OH)_3和Ni(OH)_2等产物,强化了镍黄铁矿的抑制。

Buckhornite (AuPb2BiTe2S3) is a new mineral discovered in the abandoned Buckhorn mine near Jamestown, Boulder County, Colorado. The mineral was officially approved by the CNMMNIMA in 1991. The mineral was discovered in China in 1986, but no research has been done because of the lack of funds. The mineral discovered in China occurs in the gold-bearing quartz veins at Chucha-Luanshi and Tonggou, Lingbao ounty, Henan Province. Its associated minerals are quartz, pyrite, native gold, calaverite, tellurobismuthite,...

Buckhornite (AuPb2BiTe2S3) is a new mineral discovered in the abandoned Buckhorn mine near Jamestown, Boulder County, Colorado. The mineral was officially approved by the CNMMNIMA in 1991. The mineral was discovered in China in 1986, but no research has been done because of the lack of funds. The mineral discovered in China occurs in the gold-bearing quartz veins at Chucha-Luanshi and Tonggou, Lingbao ounty, Henan Province. Its associated minerals are quartz, pyrite, native gold, calaverite, tellurobismuthite, altaite, rickardite, vulcanite, petzite,lead, etc- Columnar in crystal form, 0. 03~0. 2mm in grain size, black in color and steel-gray in streak. Perfect cleavage and metallic luster. Microhardness is 64~ 129 kg/mm2(load: 10g). Colour values relative to SE for R1 and R2 are x 0. 323, y 0.326, Y%42. 69, Ad 480 nm, Pe% 0. 041 and x0. 326, y 0. 326, Y% 43. 70, Ad 476 nm and Pe% 0. 0313. Electron microprobe analysis gave: Cu 0. 02, Au 16.96, Pb 35. 34, Bi 15. 93, Te 20. 79 and S 8.21. The empirical formula is Au1.03Pb2.04Bi0.91Te1.95S3.06,orthorhombic, α= 0.41, b= 1. 25, c= 0.95nm, V= 0.487nm3. Dcale 7. 94 (for the empirical formula). The strongest lines in the X-ray powder diffraction pattern are: 3. 79 (30),3. 143 (30), 2. 747 (100). 2. 468 (80), 2. 380 (50), 2.049 (50), 1.811 (70) and 1. 710 (50).

硫碲铋铅金矿(AuPb2BiTe2S3)是1991年国际新矿物及矿物命名委员会(CNMMNIMA)批准的新矿物,产于美国科罗拉多(Colorado)州的巴克霍恩(Buckhoun)矿山。我们于1986年发现了该矿物,但呈报CNMMNIMA晚于美国。我国的硫碲铋铅金矿产于河南灵宝出岔-乱石和桐沟两个石英脉型金矿。该矿物为柱板状晶体,粒径0.03~0.2mm,黑色,一组解理发育,金属光泽。显微硬度为64~129kg/mm2,(负荷10g),反射色为灰色,微带蓝色色调,非均质性明显,无内反射,以等能光源(SE)对R1和R2计算的颜色指数分别为:x0.323,y0.326,Y%42.69,λd480,Pe%0.04;和x0.326,y0.326,Y%43.70,λd476,Pe%0.03。电子探针分析结果为:CU0.02,Au16.96,Ph35.34,Bi15.93,Te20.79,S8.21。化学式为:Au1.03Ph2.04Bi0.91Te1.95S3.06,斜方晶系,a=0.41,b=1.25,c=0.95nm,V=0.487nm3。理论比重Dx=7.94。

The k-feldspars from Qianlishan biotite granites, Chen county.of Hunan province, have been investigated in this paper. These biotite granites are amajor source of the economic metals W, Sn, Be, Nb and Ta. The textural variatios in these rocks are considered together with the composition and structural state of the k-feldspars. The structural states of the k--feldspar were determined from X-ray powder diffractograms by two methods: the three-peak method of Wright (1968) and the Goldsmith and Laves (1954)...

The k-feldspars from Qianlishan biotite granites, Chen county.of Hunan province, have been investigated in this paper. These biotite granites are amajor source of the economic metals W, Sn, Be, Nb and Ta. The textural variatios in these rocks are considered together with the composition and structural state of the k-feldspars. The structural states of the k--feldspar were determined from X-ray powder diffractograms by two methods: the three-peak method of Wright (1968) and the Goldsmith and Laves (1954) method. The bulk chemical compositions and trace element contents of k-feldspar were determined by EMA, ICP and chemical analytical methods respectively. The compositions of the k-feldspar separate ranges between Or97Ab2 and Or78Ab21, An content is usually less than 3%, Or content of the potassic phase is between Or98 and Or88, and these k-feldspars may have crystallized at lower temperatures, around 400~600℃ Stractural states of the k-feldspars are close to those of the maximum microcline. Triclinicity values vary between 0.72-0.85, and degrees of Al, Si order vary from 0.62 to 0.96. The Al occupancies in tetrahedral site ti are 0.88-0.97 or so. The Sr, Ba and Ph contents of k-feldspar are higher and Cr content is lower ill the central part than that in the marginal part of Qianlishan granites, but negative correlations between these trace element contents in the k-feldspars and their triclinicity are observed. Data on structural states of k-feldspar from Qianlishan biotite granites. indicate that the barren granites are characterized by k-feldspars of intermediate micrbcline structure while those from mineralization granites are usually of m axim urn m icrocline structure. The variable factors which govern the Al, Si order of k-feldspars are the temperature, the omposition of the aqueous fluid and the duration of rock fluid interaction. The differences in degree of Al, Si order of the k-feldspars may be attributed to the variations in the above parameters. The most-ordered k-feldspars must have crystallized at slower cooling speed, and the presence of some volatile-rich phase in the granitic rocks may be resposible for the variations in structure, texture and degree of Al, Si order in the k-feldapars assiciated with these rocks. This is suggested that the composition and structural state of the k-feldspars may be one of reference criteria for recognizing trace element mineralization granites.

对湖南郴县千里山花岗岩体的钾长石进行了研究.钾长石的成分在Or97Ab2到Or78Ab21范围内变化,An的含量通常小于3%,钾质相中的Or含量在Or93和Or88之间.钾长石是在400~600℃的较低温度下结晶而成的,它们的结构态较接近于最大微斜长石,三斜度变化范围为0.72~0.85;Al、Si有序度也较高,约为0.62~0.96;Al占位率t;为0.88~0.97左右,而且它们的微量元素含量与其三斜度呈反消长的关系.钾长石的成分和结构态可作为判别稀有元素矿化花岗岩的一种参考标志.

 
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