rhombohedral

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.

Addition of x volue reduces the crystal axis ratio a/ c and the volume of tetragonal structure. As a result, it extendes the tetragonal antiferroelectric field that can transform into rhombohedral ferroelectric phase by electric field.

x增加，反铁电四方相的晶轴比a/c和晶胞体积减小，结果是扩大了可以发生电场诱导反铁电-铁电相变的反铁电相区。

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 crystallises in colorless rhombohedral with a relative density of 1.95.

高氯酸铵是一种无色菱形晶体,相对密度1.95.

Study of the Electronic Structure of Rhombohedral LiMnO_2 via GGA

菱方LiMnO2电子结构的GGA方法研究

XRD analysis showed that Ca-doping resulted in structural transformation. The samples of x ≤ 0.15 have tetragonal perovskite structure, but the samples of x> 0.15 are rhombohedral phase.

XRD结果分析表明，Ca掺杂引起了样品晶体结构的转变，x≤0.15的样品为四方钙钛矿结构，而x>0.15的样品则为菱方钙钛矿相。

With decreasing particle size, the Mn-0 bond length increases while the Mn-O-Mn bond angle decreases, implying the increase of rhombohedral distortion.

随着颗粒尺寸的减小Mn-O键长逐渐增加而Mn-O-Mn键角逐渐减小，说明菱形晶格畸变逐渐增加。

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（R h）含量。

It indicates that the Nd 2 AlFe 14 Mn 2 compound has a rhombohedral Th 2 Zn 17-type structure from 104 to 655 K.

研究结果表明,Nd2AlFe14Mn2化合物在104-655K具有菱方相的Th2Zn17型结构.

In the middle of stem is the pith, which composed of abundant parenchymatous cells with rhombohedral crystals.

茎中央是大型薄壁细胞构成的髓，具簇晶。