立方的

The fcc structure is a close-packed structure, and the bcc structure is not, which explains why the volume of the iron decreases when this transformation occurs.

由于面心立方结构是一种密堆垛结构，而体心立方则较松散，这解释了铁在加热过912℃后体积减小的现象。

In this thesis, two cubic nano-silver substrates with different shapes are prepared and their SERS effects are measured. The substrate which is composed of disperse nano-silver congeries has a good SERS effect.

本文应用已有的水热还原法制备出立方纳米银胶，并应用不同的方法制备出两种不同形貌的立方纳米银基底，通过SERS效应的检测，确定了当基底由分散的立方纳米银聚集体组成时，其拉曼增强效果较好。

A dominant B2CN crystal with orthorhombic structure was synthesized using deliquescent Ca3B2N4 catalyst by high pressure and high temperature. This crystal is a white photoluminescence material with blue-violet luminescence characteristic.

采用乱层石墨结构B2CN为前驱物，在高温高压下获得了六方B2CN晶体；采用Ca3B2N4触媒；在压力为3~6 GPa；温度为800~1600 ℃范围内测定了立方B(CxN1-x)的P-T相图；合成出了立方B(CxN1-x)(x=0.1~0.4)化合物。

In order to predict the final components of deformation texture during the drawing process of face centered cubic metals wires, the cold drawing textures of FCC metals are simulated by Taylor model.

为了预测面心立方金属线材在冷拔过程中形变织构的演变规律，采用Taylor模型对面心立方金属冷拔织构进行模拟。

In addition, scratch test and measurement of microhardness were carried out to investigate variation of adhesion and microhardness of post-implanted c-BN films

此外，还利用划痕试验测量了氮离子注入前后立方氮化硼膜临界载荷，用超轻载荷显微硬度试验机测量了立方氮化硼膜的显微维氏硬度。

Nanospheres of Zinc Selenide have been synthesized by hydrothermal method using hydrazine hydrate as reductant and oleic acid as surfactant.

以水合肼为还原剂，并用油酸作为表面活性剂，合成了具有面心立方结构的立方闪锌矿型硒化锌纳米球。

Firstly, virtual water contents were calculated for primary farm products and for virtual water consumption of residents in Jiangxi Province in 2000. The virtual water contents of crops was 284.81×108 m^3, and the virtual water consumption of rural residents 670.17 m^3. Then, based on the predecessors' study results, the difference of virtual water con- sumption of residents between Jiangxi Province and Shanxi Province was analyzed.

首先计算2000年江西省主要农产品虚拟水含量和城乡居民生活消费虚拟水含量，得出粮食作物的虚拟水含量为284.81×108立方公尺；城镇居民人均消费主要产品的虚拟水量为768.27立方公尺；农村居民人均消费主要产品的虚拟水含量为670.17立方公尺。

Then, an ideal random-packed-sphere model with simple cubic, body-centered cubic and face-centered cubic structures is presented to predicate the specific protonic and electronic conductivities of the catalyst layers. A correlation equation of the specific conductivity is obtained and the model is validated by the good agreement between the calculations and the measured data.

然后，分别用简单立方、体心立方和面心立方三种自由堆积球结构首次建立了描述催化层有效质子和电子传导率的理论预测模型，分析了电解质本体电导率、球半径、接触系数和接触角对质子传导的影响，得出催化层有效质子和电子传导率的计算公式，模拟结果与实验数据吻合良好，证实了模型的有效性。

The different points of views, transverse section, plane and volume changes are considered. The results show that the evolution of the Xinqiao Channel has experienced three stages: in 1861~1926 ,the Xinqiao Channel area had been eroded at first and then silted; the Xinqiao Channel is formed during 1926~1958 with the channel experiencing persistence erosion; from 1958 to 2002, the total volume of the Xinqiao Channel keeps stable with the volume of 5.02×108m^3. The pattern of 10m contour has shaped to a certainty in 1926 and 5m contour of the upper and lower parts of Biandansha has been joined. The change of sections of the Xinqiao Channel reflects its thalweg movement to the North Bank 1.1~2.8 km, its shape changes from "U" shape to "V" shape and its depth has been deepened.

计算结果显示在所研究的区域内自1861年以来新桥水道冲淤过程明显被分为三个阶段：1861~1926年的66a间新桥水道区域经过一段时间的冲刷后又重新产生淤积，总容积变化不大；1926~1958年的33a间新桥水道在不断的冲刷中总容积由2.603亿立方公尺增长到5.076亿立方公尺；1958年至今的45a时间里水道容积基本保持在平均5.02亿立方公尺。1926年新桥水道10m等深线已经形成一定的格局，1947年5m等深线向上延伸，扁担沙已经不再与崇明岛相连；1958年上下扁担沙的5m等深线基本连成一体，可以认为此时新桥水道已经形成。

Moreover, with the assistance of grey series forecasting model and the rule of the annual precipitation, the annual average precipitation, groundwater flow field, groundwater level and spring flow in the future under current exploitation circumstances were forecasted. If 2010 is a high flow year (guarantee ratio 20%), or median flow year (guarantee ratio 50%), or even low flow year (guarantee ratio 75%), the underground water level of Heilongdong spring in flood season will exceed 130 m, or reach 130 m, or even below 130 m, and the spring flow in flood season will exceed 10 m^3/s, 7 m^3/s, 5 m^3/s respectively.

以灰色序列预测模型为辅助手段，结合历年的降水规律，对未来现状开采条件下的年均降水量、地下水流场、水位及泉流量进行了不同保证率条件下的预测，若2010年为丰水年（保证率20%）、平水年（保证率50%）、枯水年（保证率75%，黑龙洞泉汛期地下水位标高分别为超过130m、达到130m、低于130m，汛期泉流量分别为超过10立方公尺/s、7立方公尺/s、5立方公尺/s。

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。