These gemstones were found in a mine in Cape Town, South Africa. The largest stone is a 136-carat clean white octahedral one which is as large as an orange.
佩特拉钻石公司发言人詹姆斯·邓肯31日表示：“这些钻石是在南非开普省一处矿井内发现的，最大的一颗重达136克拉，是洁白的八面体钻，犹如一颗橙子一样大。
Complete cubic octahedral crystal crystal shape, high strength and thermal stability.
具有完整的立方八面体晶形，高强度和热稳定性。
A method for producing a mixture of ethylene and carbon monoxide comprises contacting ethane and an oxygen source with a catalyst comprising synthetic cryptomelane or octahedral molecular sieve.
一种制备乙烯和一氧化碳混合物的方法，该方法包括使乙烷和氧源与催化剂接触，所述催化剂包含合成隐钾锰矿或八面体分子筛。
The study found that the central ion of these complexes have adopted the six-coordinated, forming octahedral geometry.
研究发现，这些配合物的中心离子都采用了六配位，形成了八面体构型。
During the reaction, the octahedral dissolution of palygorskite induced heavy metal ions coprecipitation forming mixed double hydroxid precipitation on the surface of palygorskite.
反应过程中，凹凸棒石八面体阳离子的溶解能诱导重金属共沉淀，在凹凸棒石表面形成双氢氧化物。
Inner- and outer-sphere surface complexes of all such three cations with tetrahedral and octahedral charge sites were observed in the one-layer hydrates.
一层水合物中可以观察到三种阳离子都能和四面体电荷与八面体电荷位置分别形成内、外配位作用。
The results showed that the nanoparticle materials had uniform size and were mostly octahedral structure.
结果显示所制备的纳米材料粒径均匀，多为八面体结构。
The Ni(II) cation has a distorted octahedral geometry defined by five N atoms from two dimethylglyoxime molecules and two O atoms from two formate anions.
镍离子与两个丁二酮肟配体上的四个氮原子和两个甲酸根离子上的碳原子配位进而形成八面体配位环境。
On this basis, the failure criterion of concrete simultaneously considering the freeze-thaw cycle and tension-compression ratio in principle stress space and octahedral space is established.
在此基础上，分析了双轴拉-压极限强度随冻融循环次数的变化规律，并在主应力空间和八面体应力空间建立了同时考虑冻融循环次数和拉压比的破坏准则。
By use of the double-jet apparatus controlled by a microcomputer, cubo-octahedral AgBr grain emulsions in which formate ions were doped at subsurface of AgBr microcrystals, were prepared.
使用反馈式微机控制双注乳化仪，制备了甲酸根离子掺杂于颗粒次表面的立方八面体溴化银微晶乳剂。
The results show that strength of NEPE solid propellant under multi-axis stress state is related to strain; octahedral shear stress nonlinearly increases with the average main stress.
研究表明，多轴应力状态下NEPE固体推进剂强度与应力相关，八面体剪应力随平均主应力的增加呈非线性增加；NEPE推进剂的破坏强度随拉伸速率的增加而提高。
By use of these regulations and rules, the molecular configuration of coordination compounds with octahedral shape can be conveniently correlated with their rotatory direction.
利用这些规则和规律，八面体配合物的分子构型可以方便的与它们的旋光方向联系起来。
The reactions of ringwoodite-octahedral diopside-octahedral tremolite and ringwoodite-octahedral serpentine-octahedral chlorite are dealt with in this paper.
本文讨论了由尖晶橄榄石向八面体假像硅酸盐矿物转变的交代反应。
O expresses the layers of all octahedral-coordination cations;
以O表示全部为阳离子八面体配位的层；
O expresses the layers of all octahedral-coordination cations;
以O表示全部为阳离子八面体配位的层；
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