晶石

One of Portland spar, barite, magnesite, dolomite and other resources to reserves is the highest in Hebei.

其中兰晶石、重晶石、菱镁矿、白云岩等资源储量属河北之冠。

The spinel has been synthesized by reaction sintering from natural magnesite and alumina.

本文采用天然菱镁矿和高铝矾土，通过反应烧结方法制备出镁铝尖晶石。

Modified spinel lithium manganate with zirconium doped LiMn(subscript 2-x)ZrO4 (x=0, 0.01, 0.02, 0.04, 0.06, 0.08, 0.10) used for cathode of lithium-ion batteries was prepared by solid-state method.

采用高温固相法合成了掺杂改性的尖晶石型LiMn(下标 2-x)ZrO4(x=0， 0.01， 0.02， 0.04， 0.06， 0.08， 0.10)作为锂离子电池阴极材料。

The lanthanum doped modified spinel lithium manganate LiMn(subscript 2-x)LaO4 (x=0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.10) used for cathode of lithium-ion batteries was prepared by solid-state method.

采用高温固相法，合成了掺杂改性的锂离子电池阴极材料尖晶石结构的LiMn(下标 2-x)LaO4(x=0、0.01、0.02、0.03、0.04、0.05、0.10)。

The photocatalytic degradation property of ZnM2O4 (M=Cr, Mn, Fe) nanoparticles was investigated by using methyl orange, acid red B and reactive red K-2G as model pollutants under the irradiation of a mercury-vapor lamp (λ＞400 nm) or sunlight. The degradation rates of the above three dyes by ZnM2O4(M=Cr, Mn, Fe) are over 80％, 57％ and 39％, respectively within 2 h. It is found that ZnM2O4 (M=Cr, Mn, Fe)has a novel photocatalytic behavior for dyes under visible light irradiation.

在高压汞灯(λ＞400 nm)和太阳光照射下，纳米ZnM2O4粉体对甲基橙、酸性红B、活性艳红K-2G等有机模拟降解液的2h脱色降解率分别达到80﹪，57﹪和39﹪以上，表明锌尖晶石ZnM2O4光催化剂具有良好的可见光催化活性，并随禁带宽度Eg的减小，催化活性增加。

The variations of Cr# in spinel and Ti in pyroxene suggest that the Daba-Xiugugabu peridotite had a history of complex melting and an impress of mantle metasomatism. The processes of formation of the peridotites possibly include a transition from a tectonic setting to another.

尖晶石中Cr及辉石中Ti的广泛变化表明它们具有复杂的熔融历史及地幔交代作用的印记，其形成过程可能经历了两种构造环境的转变。

We offer high quality Cat's Eye, Millefiori Glass, Opalite, Cubic Zirconia, Corundum and Spinel products in variety of colors, sizes and shapes.

我们提供高质量的猫眼，millefiori玻璃，opalite、立方氧化锆、刚玉、尖晶石产品品种色、大小和形状。

Mineralizer such as TiO2,Cr2O3 and ZrO2 with proper amount, have a beneficial effect on the formation of magnesium aluminate spinel solid solution and the densification of samples, and decrease of porosity.

外加适量的TiO2、Cr2O3、ZrO2矿化剂能促进镁铝尖晶石烧结和晶粒生长，提高试样的体积密度和抗折强度，降低显气孔率。

A new method for directly producing naphthol from naphthalene is studied in this paper,in which spinel-type magnesium ferrite is used as the catalyst and hydrogen peroxide as the oxidant.

研究了萘一步催化氧化合成萘酚的新方法，该法以具有尖晶石结构的铁酸镁为催化剂，过氧化氢为氧化剂。

On the basis of the study on the petrology, Trace element, and isotopic geochemistry, the primary magma of volcanic rocks can be divided into two series according to their originated rocks and degree of partial melting. One is the basanite-alkaline basalt-Olivine tholeiite magma series, which are generated by partial melting from spinel Iherzolite; the other is nephelinite magma-alkaline picritic basalt magma, which are generated by partial melting of the garnet Iherzolite.

岩石化学、微量元素、同位素地球化学证据都表明，华北、华南地区的火山岩根据源岩和局部熔融程度的不同，可以分为两个原生岩浆系列：一个是源岩为尖晶石二辉橄榄岩，随着局部熔融程度的增加，形成的碧玄岩岩浆-碱性玄武岩岩浆-橄榄拉斑玄武岩岩浆；另一个是源岩为石榴石二辉橄榄岩，随着局部熔融程度的增加形成的霞石岩岩浆-碱性苦橄玄武岩系列。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐