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- rhombohedral tetrahedry 斜方正多面像
- The product is rhombohedral or flaky crystal. 包装说明：无色菱形或片状结晶。
- Its low temperature form is rhombohedral with an elongation along (111). 它的低温形态是沿着[111]伸长的菱面体。
- It indicates that the Nd2AlFe14Mn2 compound has a rhombohedral Th2Zn17-type structure from 104 to 655 K. 研究结果表明,Nd2AlFe14Mn2化合物在104-655 K具有菱方相的Th2Zn17型结构。
- Analysis of Raman Scattering in Fe-doped PZN-PZT Ceramics with the Co-existence of Tetragonal and Rhombohedral[J]. 引用该论文 路朋献;邹文俊;许德合;马秋花;朱满康;侯永改;栗政新;王春华.
- The relaxation of Raman selection rules in cubic nanophase is attributed to local rhombohedral distortion. 拉曼选择定则的弛豫源于纳米晶基体具有局域三方晶格畸变。
- After the electron beam had been shifted away, the rhombohedral structure was restored. 电子束移开后，又恢复到原来的菱面体结构。
- Result shown PFN gave rise to the crystal structure transit from rhombohedral phase to tetragonal phase. PFN的增加引起该体系陶瓷从三方相向四方相转变。
- The dependence of structural parameters including lattice constants, rhombohedral angle, and atomic coordinates on pressure was also studied. 计算基于平面波基组，使用模守恒赝势和局域密度近似。
- PZT;PT;the dielectric constant; the lattice distortion; tetragonal phase region;rhombohedral phase region; phase coexistence region. 介电常数;晶格畸变;四方相区;三角相区;混合相区
- Quartz is commonly found as a six-sided, prism-shaped crystal topped by pyramid-like form, while calcite usually shows a crystal form of rhombohedron. 石英通常呈六方柱，顶上带有双锥的晶形，而方解石却常以菱形六面体形式出现。
- The AFM micrographs showed that the morphology of rhombohedral crystals changed dramatically in the presence of HEDP and it gave appearances like polycrystals. AFM图像显示添加HEDP后菱方体晶体的形貌发生了根本性的变化,呈现一种类似多晶的表面结构;
- The study on the properties of the system doped by Cr indicated that the MPB of the tetragonal and rhombohedral phase lay in a broad composition region. 通过研究Zr/Ti比对Cr掺杂PSN-PZN-PZT系统性能的影响发现:三方相和四方相共存的准同型相界位于一个很宽的组成范围内;
- The porosity for cubical packing (the least compact arrangement) is 47.6 per cent, and that for rhombohedral (the most compact arrangement) is 25.96 per cent. 立方形堆积(最不松散的堆积)的孔隙度为47．6%25，菱形堆积(最紧密堆积)的孔隙度为25.;96%25。
- The low temperature transformation changes the crystal structure of LaCrO_3 and Ca-doped LaCrO_3 from orthorhombic to rhombohedral and is a heat-absorbing reaction. 铬酸镧及掺杂铬酸镧材料的低温结构相变均是由正交结构向菱形结构的转变。
- The calcite crystals precipitated from pure supersaturated calcium carbonate exhibit mainly two habits:flat like rhombic crystal and rhombohedral crystal similar to a cube. 纯碳酸钙过饱和溶液析出的碳酸钙晶体有两种主要的形态:薄片状菱形晶体和类似立方体的菱方体晶体。
- It was ascertained that the addition of MnO and CoO did not cause a remarkable change in crystalline structure, with the specimens remaining the coexistence of rhombohedral and tetragonal phases. 研究结果表明，添加MnO和CoO对材料的晶体结构未产生显著影响，各组分样品保持三方-四方共存结构。
- Under a suitable condition of crystallization, dark brown short rhombohedron crystals could be obtained from nitrogenase MnFe protein purified from a mutant UW 3 of Azotobacter vinelandii Lipmann grown in Mn_containing but Mo_ and NH 3_free medium. 从以Mn代钼的固氮培养基中固氮生长的固氮菌 (AzotobactervinelandiiLipmann)突变种UW3 中分离纯化的MnFe蛋白 ,在一定的结晶条件下 ,可从溶液中析出深棕色的短斜四棱柱晶体。
- rhombohedral tetratohedral class 菱形四分面体类
- rhombohedral hemimorphic hemihedral class 菱形极半面象晶族
