立方

"Our material is hard enough to scratch diamond, and much harder than osmium diboride," he said.

而且其它超硬材料，包括金刚石和立方结构的氮化硼都是在昂贵的高压条件下制造出来的。

The oxidation of C=C double bond in 4-isopropylideneC〓-trishomocubane-8, 11-dione was studied. Ozonolysis of that double bond was arrived and the ozonide was found much more stable than ordinary ozonides.

详细研究了4—异亚丙基—C〓—三高立方烷—8，11—二酮中碳—碳双键的氧化反应，实现了双键的臭氧化分解，并发现其臭氧化物具有不寻常的稳定性。

For thin sections of each crystal face, the TEM image along only [110] direction is observed, moreover, at each crystal face, the diagonal of the rectangular repeating unit is parallel to the crystal edge, in accordance with an ideal crystal model with Im3m symmetry.

以非离子嵌段聚合物EO〓PO〓EO〓为模板剂，首次合成出了高产率（100％）、形貌规则、大小均一（在1μm左右）、纯的立方相(Im3m)纳米介孔氧化硅单晶。

The final crystalline phase has a FCC structure and the (111) plane is parallel to the shear direction.

最终生成的晶粒具有面心立方结构，其(111)方向平行于剪切面。

In the specimens with perfect cube texture, the magnetic anisotropy constant k1 has been determined; the result is consistent with that of other authors' using single crystal specimens.

从具有完整立方结构的试样上测得的磁晶各向异性常数k_1和其他作者从单晶体上得到的值相近，而从保有冷轧结构的试样定得的k_1值则较大。

Unexpectedly the vanishing magnetic cubic anisotropy in Permalloy is found to be independent of its atomic structure but depends only upon the stoichiometry of Fe and Ni in the Fe_x Ni_(1-x) alloy. This new observation is further investigated and confirmed by first principles electronic band calculations, which helps to understand the long-standing issue why Permalloy should be a soft magnet.

我们发现立方磁晶各向异性能(K_1)消失这个Permalloy的软磁特性跟具体晶体结构无关，只取决于化学组分，第一性原理能带计算也验证了这一实验结果，从而有助于理解为何Permalloy很软这个长期未解决的问题。

Cubic and amorphous materials cannot display pleochroism.

立方晶系和非晶质宝石材料不显示多色性。

For spin-3/2 Isingmodel with transverse crystal field,the tricritical phenomena havebeen observed for the square and simple cubic lattice,but there isno tricritical point for the honeycomb lattice.

横向晶场中自旋为3/2的Ising模型中，对于蜂窝点阵晶格来说，系统相变没有三相点，而正方点阵、简立方点阵晶格却有三相点的存在。

2Potential of realistic rainwater was 3 086 185 m^3, which was 96.07% of the potential of theoretical resources.

2试区雨水资源可实现潜力量为3 086 185立方公尺，占试区雨水资源理论潜力的96.07%。

The results showed that:(1) the potential of theoretical resources of rainwater was 3 211 420 m^3, the ratio of using in the same spot, different spot and rainwater collection reiterative utilization is 28.73%, 15.83% and 55.44%.

结果表明：(1)试区雨水资源最大理论潜力为3 211 420立方公尺，就地利用、异地利用和叠加利用三种利用方式的理论潜力比例分别为28.73%、15.83%和55.44%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。