菱面体

此类晶体的基本形状为一菱面体。

The basic form of this crystal is a rhomb .

在反应过程中，P沸石首先呈短柱状结晶，随着反应时间延长，结晶形态发生变化，由短柱状向菱面体过渡。

In reaction process P-zeolite first appears the short column crystal and then the crystal pattern changes from short column to rhombohedron with reaction time lasting .

Cu（I）中心和两个桥联碘原子形成了Cu（μ2-I）2Cu菱面体，进而再与两个L1配体构成了椭圆形的闭合分子环。

Both of bridging iodides are also bound to another symmetry related Cu ( I ) thus forming a Cu (μ _2-I ) _2Cu rhombohedron .

本文首次定量地研究了表征石墨晶体结构完善程度的两个要素，即石墨化程度（μ）和石墨菱面体多型（Rh）含量。

In this paper the two major elements & graphitization (μ) and the content of graphite rhombohedral polymorph ( R_h ) have been studied for the first time on the quantitative basis .

本文首次给出钒的菱面体结构在高压下的能带结构，结果表明发生了带的Jahn-Teller效应即原来三重简并的Γ25，发生分裂并导致总能减少。

We firstly gave the band structures of vanadium in rhombohedral lattice under high pressures , the results display band Jahn-Teller effects or the initially triple - degenerate Γ 25 , splitting .

包括菱面体单元结构模型与其它几种非晶模型的比较；

The RUSM is compared with some other models .

方解石晶体则主要呈平行发育的柱状、板状和各种状态的菱面体等。

Calcite crystals are mainly parallel developed columnar , laminal or rhombohedron shapes .

该矿物呈菱面体晶体，常呈假立方体状、粒状和球粒状。暗黄绿色。

Rhombi and usually with pseudo-cube grain and ball-grain in form , dark green-yellow .

它的低温形态是沿着〔111〕伸长的菱面体。

Its low temperature form is rhombohedral with an elongation along ( 111 ) .

利用菱面体模型建立的非晶合金结构-成分-性能之间的对应关系；

The relationships between structure , composition and property established by the RUSM are presented .

综述了非晶态合金菱面体单元结构模型在理论及应用方面的最新进展。

Recent development of theory and application of the RUSM ( rhomb unit structural model ) for amorphous alloys are reviewed .

随着石墨矿床变质程度的加深，石墨的H/c原子比率、菱面体多型含量逐渐减小，而石墨的氧化温度、浸油中的反射率逐渐增大。

With the metamorphic grade of the graphite deposit increasing , the atomic ratio of H / C of natural graphite and the content of Rh decrease gradually and the T_ ( max ) and R_ ( oil )( % ) increase gradually .

实验结果显示，在以去离子水为溶剂时，得到了菱面体状方解石；但在反应体系中加入少量的乙二醇后得到了方解石和少量扁平盘状球霰石的混合相。

The results showed that the rhombohedral calcite was the exclusive product when deionized water was applyed as the solvent ; however , rhombohedral calcite and a spot of vaterite with planular discoid morphology were obtained by adding a small amount of ethylene glycol in the reaction system .